31103023113131 has 8 divisors (see below), whose sum is σ = 31207988448000. Its totient is φ = 30998089545640.

The previous prime is 31103023113119. The next prime is 31103023113143. The reversal of 31103023113131 is 13131132030113.

It is an interprime number because it is at equal distance from previous prime (31103023113119) and next prime (31103023113143).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31103023113131 is a prime.

It is a super-2 number, since 2×31103023113131² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31103023113097 and 31103023113106.

It is not an unprimeable number, because it can be changed into a prime (31103023113191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5979551 + ... + 9897528.

It is an arithmetic number, because the mean of its divisors is an integer number (3900998556000).

Almost surely, 2^{31103023113131} is an apocalyptic number.

31103023113131 is a deficient number, since it is larger than the sum of its proper divisors (104965334869).

31103023113131 is a wasteful number, since it uses less digits than its factorization.

31103023113131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15883689.

The product of its (nonzero) digits is 486, while the sum is 23.

Adding to 31103023113131 its reverse (13131132030113), we get a palindrome (44234155143244).

The spelling of 31103023113131 in words is "thirty-one trillion, one hundred three billion, twenty-three million, one hundred thirteen thousand, one hundred thirty-one".