31748654121 has 16 divisors (see below), whose sum is σ = 43481424000. Its totient is φ = 20590979328.

The previous prime is 31748654089. The next prime is 31748654159. The reversal of 31748654121 is 12145684713.

It is not a de Polignac number, because 31748654121 - 2⁵ = 31748654089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31748653121) 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, 1128180 + ... + 1155978.

It is an arithmetic number, because the mean of its divisors is an integer number (2717589000).

Almost surely, 2^31748654121 is an apocalyptic number.

It is an amenable number.

31748654121 is a deficient number, since it is larger than the sum of its proper divisors (11732769879).

31748654121 is a wasteful number, since it uses less digits than its factorization.

31748654121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38128.

The product of its digits is 161280, while the sum is 42.

The spelling of 31748654121 in words is "thirty-one billion, seven hundred forty-eight million, six hundred fifty-four thousand, one hundred twenty-one".