31385526345 has 24 divisors (see below), whose sum is σ = 54407650752. Its totient is φ = 16737079200.

The previous prime is 31385526269. The next prime is 31385526349. The reversal of 31385526345 is 54362558313.

31385526345 is a `hidden beast` number, since 3 + 1 + 3 + 8 + 5 + 5 + 2 + 634 + 5 = 666.

It is not a de Polignac number, because 31385526345 - 2⁹ = 31385525833 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 31385526345.

It is not an unprimeable number, because it can be changed into a prime (31385526349) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 431140 + ... + 498650.

It is an arithmetic number, because the mean of its divisors is an integer number (2266985448).

Almost surely, 2^31385526345 is an apocalyptic number.

It is an amenable number.

31385526345 is a deficient number, since it is larger than the sum of its proper divisors (23022124407).

31385526345 is a wasteful number, since it uses less digits than its factorization.

31385526345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77853 (or 77850 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 45.

The spelling of 31385526345 in words is "thirty-one billion, three hundred eighty-five million, five hundred twenty-six thousand, three hundred forty-five".