31011121113 has 32 divisors (see below), whose sum is σ = 47678484480. Its totient is φ = 17562398400.

The previous prime is 31011121093. The next prime is 31011121121. The reversal of 31011121113 is 31112111013.

It is not a de Polignac number, because 31011121113 - 2⁶ = 31011121049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31011121092 and 31011121101.

It is not an unprimeable number, because it can be changed into a prime (31011121153) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1380931 + ... + 1403207.

It is an arithmetic number, because the mean of its divisors is an integer number (1489952640).

Almost surely, 2^31011121113 is an apocalyptic number.

It is an amenable number.

31011121113 is a deficient number, since it is larger than the sum of its proper divisors (16667363367).

31011121113 is a wasteful number, since it uses less digits than its factorization.

31011121113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22877.

The product of its (nonzero) digits is 18, while the sum is 15.

Adding to 31011121113 its reverse (31112111013), we get a palindrome (62123232126).

The spelling of 31011121113 in words is "thirty-one billion, eleven million, one hundred twenty-one thousand, one hundred thirteen".