31426476687 has 8 divisors (see below), whose sum is σ = 46557743280. Its totient is φ = 20950984440.

The previous prime is 31426476677. The next prime is 31426476689. The reversal of 31426476687 is 78667462413.

31426476687 is a `hidden beast` number, since 314 + 264 + 7 + 6 + 68 + 7 = 666.

It is not a de Polignac number, because 31426476687 - 2¹⁶ = 31426411151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31426476689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 581971764 + ... + 581971817.

It is an arithmetic number, because the mean of its divisors is an integer number (5819717910).

Almost surely, 2^31426476687 is an apocalyptic number.

31426476687 is a deficient number, since it is larger than the sum of its proper divisors (15131266593).

31426476687 is a wasteful number, since it uses less digits than its factorization.

31426476687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1163943590 (or 1163943584 counting only the distinct ones).

The product of its digits is 8128512, while the sum is 54.

The spelling of 31426476687 in words is "thirty-one billion, four hundred twenty-six million, four hundred seventy-six thousand, six hundred eighty-seven".