31025145339 has 16 divisors (see below), whose sum is σ = 46742217600. Its totient is φ = 20332862568.

The previous prime is 31025145329. The next prime is 31025145373. The reversal of 31025145339 is 93354152013.

31025145339 is a `hidden beast` number, since 3 + 102 + 5 + 14 + 533 + 9 = 666.

It is not a de Polignac number, because 31025145339 - 2⁹ = 31025144827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31025145329) 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, 9736369 + ... + 9739554.

It is an arithmetic number, because the mean of its divisors is an integer number (2921388600).

Almost surely, 2^31025145339 is an apocalyptic number.

31025145339 is a deficient number, since it is larger than the sum of its proper divisors (15717072261).

31025145339 is a wasteful number, since it uses less digits than its factorization.

31025145339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19475991 (or 19475985 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 36.

The spelling of 31025145339 in words is "thirty-one billion, twenty-five million, one hundred forty-five thousand, three hundred thirty-nine".