31100121004 has 12 divisors (see below), whose sum is σ = 55690914664. Its totient is φ = 15188431104.

The previous prime is 31100120993. The next prime is 31100121029. The reversal of 31100121004 is 40012100113.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90407157 + ... + 90407500.

Almost surely, 2^31100121004 is an apocalyptic number.

It is an amenable number.

31100121004 is a deficient number, since it is larger than the sum of its proper divisors (24590793660).

31100121004 is a wasteful number, since it uses less digits than its factorization.

31100121004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180814704 (or 180814702 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 31100121004 its reverse (40012100113), we get a palindrome (71112221117).

The spelling of 31100121004 in words is "thirty-one billion, one hundred million, one hundred twenty-one thousand, four".