1240232931 has 16 divisors (see below), whose sum is σ = 2099865600. Its totient is φ = 708704424.

The previous prime is 1240232863. The next prime is 1240232941. The reversal of 1240232931 is 1392320421.

It is a happy number.

It is not a de Polignac number, because 1240232931 - 2¹⁵ = 1240200163 is a prime.

It is a super-2 number, since 2×1240232931² = 3076355446273701522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1240232895 and 1240232904.

It is not an unprimeable number, because it can be changed into a prime (1240232941) 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, 3280851 + ... + 3281228.

It is an arithmetic number, because the mean of its divisors is an integer number (131241600).

Almost surely, 2^1240232931 is an apocalyptic number.

1240232931 is a deficient number, since it is larger than the sum of its proper divisors (859632669).

1240232931 is an equidigital number, since it uses as much as digits as its factorization.

1240232931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6562095 (or 6562089 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 1240232931 is about 35216.9409659613. The cubic root of 1240232931 is about 1074.4043373171.

The spelling of 1240232931 in words is "one billion, two hundred forty million, two hundred thirty-two thousand, nine hundred thirty-one".