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31141834 = 215570917
BaseRepresentation
bin111011011001…
…0111111001010
32011121011120021
41312302333022
530433014314
63031251054
7525462343
oct166627712
964534507
1031141834
1116640359
12a519a8a
1365b4929
1441c90ca
152b02324
hex1db2fca

31141834 has 4 divisors (see below), whose sum is σ = 46712754. Its totient is φ = 15570916.

The previous prime is 31141823. The next prime is 31141867. The reversal of 31141834 is 43814113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43814113 = 76259159.

It can be written as a sum of positive squares in only one way, i.e., 15578809 + 15563025 = 3947^2 + 3945^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31141799 and 31141808.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7785457 + ... + 7785460.

Almost surely, 231141834 is an apocalyptic number.

31141834 is a deficient number, since it is larger than the sum of its proper divisors (15570920).

31141834 is a wasteful number, since it uses less digits than its factorization.

31141834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15570919.

The product of its digits is 1152, while the sum is 25.

The square root of 31141834 is about 5580.4868963201. The cubic root of 31141834 is about 314.6164273806.

Adding to 31141834 its reverse (43814113), we get a palindrome (74955947).

The spelling of 31141834 in words is "thirty-one million, one hundred forty-one thousand, eight hundred thirty-four".

Divisors: 1 2 15570917 31141834