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488731231 = 4013121787
BaseRepresentation
bin11101001000010…
…111001001011111
31021001122010012201
4131020113021133
52000103344411
6120255112331
715053101252
oct3510271137
91231563181
10488731231
1123097000a
121178126a7
137a33aba1
1448ca1099
152cd8e3c1
hex1d21725f

488731231 has 4 divisors (see below), whose sum is σ = 488857032. Its totient is φ = 488605432.

The previous prime is 488731219. The next prime is 488731273. The reversal of 488731231 is 132137884.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 488731231 - 211 = 488729183 is a prime.

It is a super-2 number, since 2×4887312312 = 477716432309550722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (488731211) 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, 56881 + ... + 64906.

It is an arithmetic number, because the mean of its divisors is an integer number (122214258).

Almost surely, 2488731231 is an apocalyptic number.

488731231 is a deficient number, since it is larger than the sum of its proper divisors (125801).

488731231 is a wasteful number, since it uses less digits than its factorization.

488731231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125800.

The product of its digits is 32256, while the sum is 37.

The square root of 488731231 is about 22107.2664750756. The cubic root of 488731231 is about 787.6924765432.

The spelling of 488731231 in words is "four hundred eighty-eight million, seven hundred thirty-one thousand, two hundred thirty-one".

Divisors: 1 4013 121787 488731231