31234440125 has 16 divisors (see below), whose sum is σ = 44549236992. Its totient is φ = 21417901200.

The previous prime is 31234440113. The next prime is 31234440199. The reversal of 31234440125 is 52104443213.

It is not a de Polignac number, because 31234440125 - 2¹⁸ = 31234177981 is a prime.

It is a Duffinian number.

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, 17847377 + ... + 17849126.

It is an arithmetic number, because the mean of its divisors is an integer number (2784327312).

Almost surely, 2^31234440125 is an apocalyptic number.

31234440125 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

31234440125 is a deficient number, since it is larger than the sum of its proper divisors (13314796867).

31234440125 is an equidigital number, since it uses as much as digits as its factorization.

31234440125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35696525 (or 35696515 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 31234440125 its reverse (52104443213), we get a palindrome (83338883338).

The spelling of 31234440125 in words is "thirty-one billion, two hundred thirty-four million, four hundred forty thousand, one hundred twenty-five".