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1344563531 = 10687125813
BaseRepresentation
bin101000000100100…
…0110100101001011
310110201000220102022
41100021012211023
510223202013111
6341230355055
745214413203
oct12011064513
93421026368
101344563531
1162aa75533
1231635ba8b
1318573ba2c
14ca801403
157d0942db
hex5024694b

1344563531 has 4 divisors (see below), whose sum is σ = 1344700032. Its totient is φ = 1344427032.

The previous prime is 1344563513. The next prime is 1344563537. The reversal of 1344563531 is 1353654431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1353654431 = 2946677739.

It is a cyclic number.

It is not a de Polignac number, because 1344563531 - 210 = 1344562507 is a prime.

It is a super-2 number, since 2×13445635312 = 3615702177790375922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1344563491 and 1344563500.

It is not an unprimeable number, because it can be changed into a prime (1344563537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52220 + ... + 73593.

It is an arithmetic number, because the mean of its divisors is an integer number (336175008).

Almost surely, 21344563531 is an apocalyptic number.

1344563531 is a deficient number, since it is larger than the sum of its proper divisors (136501).

1344563531 is a wasteful number, since it uses less digits than its factorization.

1344563531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136500.

The product of its digits is 64800, while the sum is 35.

The square root of 1344563531 is about 36668.2905382839. The cubic root of 1344563531 is about 1103.7238890101.

The spelling of 1344563531 in words is "one billion, three hundred forty-four million, five hundred sixty-three thousand, five hundred thirty-one".

Divisors: 1 10687 125813 1344563531