31030303113 has 24 divisors (see below), whose sum is σ = 45619516800. Its totient is φ = 20321237664.

The previous prime is 31030303091. The next prime is 31030303123. The reversal of 31030303113 is 31130303013.

It is not a de Polignac number, because 31030303113 - 2²⁹ = 30493432201 is a prime.

It is a super-2 number, since 2×31030303113² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31030303123) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29298 + ... + 250836.

It is an arithmetic number, because the mean of its divisors is an integer number (1900813200).

Almost surely, 2^31030303113 is an apocalyptic number.

It is an amenable number.

31030303113 is a deficient number, since it is larger than the sum of its proper divisors (14589213687).

31030303113 is a wasteful number, since it uses less digits than its factorization.

31030303113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221821 (or 221818 counting only the distinct ones).

The product of its (nonzero) digits is 243, while the sum is 18.

Adding to 31030303113 its reverse (31130303013), we get a palindrome (62160606126).

The spelling of 31030303113 in words is "thirty-one billion, thirty million, three hundred three thousand, one hundred thirteen".