1310232531 has 16 divisors (see below), whose sum is σ = 1791286560. Its totient is φ = 851374080.

The previous prime is 1310232527. The next prime is 1310232541. The reversal of 1310232531 is 1352320131.

It is not a de Polignac number, because 1310232531 - 2² = 1310232527 is a prime.

It is a super-2 number, since 2×1310232531² = 3433418570581331922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1310232498 and 1310232507.

It is not an unprimeable number, because it can be changed into a prime (1310232541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142275 + ... + 151203.

It is an arithmetic number, because the mean of its divisors is an integer number (111955410).

Almost surely, 2^1310232531 is an apocalyptic number.

1310232531 is a deficient number, since it is larger than the sum of its proper divisors (481054029).

1310232531 is a wasteful number, since it uses less digits than its factorization.

1310232531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10166.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 1310232531 is about 36197.1342926481. The cubic root of 1310232531 is about 1094.2489184345.

Adding to 1310232531 its reverse (1352320131), we get a palindrome (2662552662).

The spelling of 1310232531 in words is "one billion, three hundred ten million, two hundred thirty-two thousand, five hundred thirty-one".