42977102531 has 16 divisors (see below), whose sum is σ = 47801311488. Its totient is φ = 38306767200.

The previous prime is 42977102521. The next prime is 42977102549. The reversal of 42977102531 is 13520177924.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42977102531 is a prime.

It is a super-2 number, since 2×42977102531² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42977102521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 856520 + ... + 905306.

It is an arithmetic number, because the mean of its divisors is an integer number (2987581968).

Almost surely, 2^42977102531 is an apocalyptic number.

42977102531 is a deficient number, since it is larger than the sum of its proper divisors (4824208957).

42977102531 is a wasteful number, since it uses less digits than its factorization.

42977102531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50362.

The product of its (nonzero) digits is 105840, while the sum is 41.

The spelling of 42977102531 in words is "forty-two billion, nine hundred seventy-seven million, one hundred two thousand, five hundred thirty-one".