31457345445 has 48 divisors (see below), whose sum is σ = 57854684160. Its totient is φ = 15757204992.

The previous prime is 31457345443. The next prime is 31457345461. The reversal of 31457345445 is 54454375413.

31457345445 is a `hidden beast` number, since 31 + 4 + 5 + 73 + 4 + 544 + 5 = 666.

It is not a de Polignac number, because 31457345445 - 2¹ = 31457345443 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 31457345445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31457345443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 323512 + ... + 409358.

It is an arithmetic number, because the mean of its divisors is an integer number (1205305920).

Almost surely, 2^31457345445 is an apocalyptic number.

It is an amenable number.

31457345445 is a deficient number, since it is larger than the sum of its proper divisors (26397338715).

31457345445 is a wasteful number, since it uses less digits than its factorization.

31457345445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86354 (or 86351 counting only the distinct ones).

The product of its digits is 2016000, while the sum is 45.

The spelling of 31457345445 in words is "thirty-one billion, four hundred fifty-seven million, three hundred forty-five thousand, four hundred forty-five".