31232430140 has 48 divisors (see below), whose sum is σ = 65774903040. Its totient is φ = 12457451520.

The previous prime is 31232430113. The next prime is 31232430167. The reversal of 31232430140 is 4103423213.

It is an interprime number because it is at equal distance from previous prime (31232430113) and next prime (31232430167).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18447134 + ... + 18448826.

It is an arithmetic number, because the mean of its divisors is an integer number (1370310480).

Almost surely, 2^31232430140 is an apocalyptic number.

It is an amenable number.

31232430140 is an abundant number, since it is smaller than the sum of its proper divisors (34542472900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31232430140 is a wasteful number, since it uses less digits than its factorization.

31232430140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3782 (or 3780 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 31232430140 its reverse (4103423213), we get a palindrome (35335853353).

The spelling of 31232430140 in words is "thirty-one billion, two hundred thirty-two million, four hundred thirty thousand, one hundred forty".