31113100103 has 16 divisors (see below), whose sum is σ = 33078404160. Its totient is φ = 29163035136.

The previous prime is 31113100093. The next prime is 31113100133. The reversal of 31113100103 is 30100131113.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 31113100103 - 2⁴ = 31113100087 is a prime.

It is a super-2 number, since 2×31113100103² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31113100133) 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, 5349425 + ... + 5355237.

It is an arithmetic number, because the mean of its divisors is an integer number (2067400260).

Almost surely, 2^31113100103 is an apocalyptic number.

31113100103 is a deficient number, since it is larger than the sum of its proper divisors (1965304057).

31113100103 is a wasteful number, since it uses less digits than its factorization.

31113100103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7066.

The product of its (nonzero) digits is 27, while the sum is 14.

Adding to 31113100103 its reverse (30100131113), we get a palindrome (61213231216).

The spelling of 31113100103 in words is "thirty-one billion, one hundred thirteen million, one hundred thousand, one hundred three".