31465285976989 has 16 divisors (see below), whose sum is σ = 34810398207360. Its totient is φ = 28289581365760.

The previous prime is 31465285976983. The next prime is 31465285977089. The reversal of 31465285976989 is 98967958256413.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31465285976989 is a prime.

It is a super-2 number, since 2×31465285976989² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31465285976983) 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, 52576219 + ... + 53171320.

It is an arithmetic number, because the mean of its divisors is an integer number (2175649887960).

Almost surely, 2^{31465285976989} is an apocalyptic number.

It is an amenable number.

31465285976989 is a deficient number, since it is larger than the sum of its proper divisors (3345112230371).

31465285976989 is a wasteful number, since it uses less digits than its factorization.

31465285976989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105748340.

The product of its digits is 7054387200, while the sum is 82.

The spelling of 31465285976989 in words is "thirty-one trillion, four hundred sixty-five billion, two hundred eighty-five million, nine hundred seventy-six thousand, nine hundred eighty-nine".