31238232987 has 16 divisors (see below), whose sum is σ = 44861191200. Its totient is φ = 19220831232.

The previous prime is 31238232959. The next prime is 31238232997. The reversal of 31238232987 is 78923283213.

It is not a de Polignac number, because 31238232987 - 2¹² = 31238228891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31238232917) 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, 245953 + ... + 350669.

It is an arithmetic number, because the mean of its divisors is an integer number (2803824450).

Almost surely, 2^31238232987 is an apocalyptic number.

31238232987 is a deficient number, since it is larger than the sum of its proper divisors (13622958213).

31238232987 is a wasteful number, since it uses less digits than its factorization.

31238232987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112382.

The product of its digits is 870912, while the sum is 48.

The spelling of 31238232987 in words is "thirty-one billion, two hundred thirty-eight million, two hundred thirty-two thousand, nine hundred eighty-seven".