31731760142 has 32 divisors (see below), whose sum is σ = 51046212960. Its totient is φ = 14792545920.

The previous prime is 31731760127. The next prime is 31731760147. The reversal of 31731760142 is 24106713713.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31731760147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1036292 + ... + 1066472.

It is an arithmetic number, because the mean of its divisors is an integer number (1595194155).

Almost surely, 2^31731760142 is an apocalyptic number.

31731760142 is a deficient number, since it is larger than the sum of its proper divisors (19314452818).

31731760142 is a wasteful number, since it uses less digits than its factorization.

31731760142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30341 (or 30307 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 35.

The spelling of 31731760142 in words is "thirty-one billion, seven hundred thirty-one million, seven hundred sixty thousand, one hundred forty-two".