31991740010 has 32 divisors (see below), whose sum is σ = 60631623360. Its totient is φ = 12120046848.

The previous prime is 31991740009. The next prime is 31991740013. The reversal of 31991740010 is 1004719913.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (31991740013) 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, 794114 + ... + 833426.

It is an arithmetic number, because the mean of its divisors is an integer number (1894738230).

Almost surely, 2^31991740010 is an apocalyptic number.

31991740010 is a deficient number, since it is larger than the sum of its proper divisors (28639883350).

31991740010 is a wasteful number, since it uses less digits than its factorization.

31991740010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43622.

The product of its (nonzero) digits is 6804, while the sum is 35.

The spelling of 31991740010 in words is "thirty-one billion, nine hundred ninety-one million, seven hundred forty thousand, ten".