31877029742 has 16 divisors (see below), whose sum is σ = 49672378752. Its totient is φ = 15326120160.

The previous prime is 31877029741. The next prime is 31877029757. The reversal of 31877029742 is 24792077813.

It is a happy number.

It is a super-2 number, since 2×31877029742² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31877029741) 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, 1627673 + ... + 1647140.

It is an arithmetic number, because the mean of its divisors is an integer number (3104523672).

Almost surely, 2^31877029742 is an apocalyptic number.

31877029742 is a deficient number, since it is larger than the sum of its proper divisors (17795349010).

31877029742 is a wasteful number, since it uses less digits than its factorization.

31877029742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3275003.

The product of its (nonzero) digits is 1185408, while the sum is 50.

The spelling of 31877029742 in words is "thirty-one billion, eight hundred seventy-seven million, twenty-nine thousand, seven hundred forty-two".