31103242313 has 32 divisors (see below), whose sum is σ = 40024575360. Its totient is φ = 23718159360.

The previous prime is 31103242301. The next prime is 31103242393. The reversal of 31103242313 is 31324230113.

It is a cyclic number.

It is not a de Polignac number, because 31103242313 - 2¹² = 31103238217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31103242393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 150095 + ... + 291092.

It is an arithmetic number, because the mean of its divisors is an integer number (1250767980).

Almost surely, 2^31103242313 is an apocalyptic number.

It is an amenable number.

31103242313 is a deficient number, since it is larger than the sum of its proper divisors (8921333047).

31103242313 is a wasteful number, since it uses less digits than its factorization.

31103242313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441257.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 31103242313 its reverse (31324230113), we get a palindrome (62427472426).

It can be divided in two parts, 3110 and 3242313, that added together give a palindrome (3245423).

The spelling of 31103242313 in words is "thirty-one billion, one hundred three million, two hundred forty-two thousand, three hundred thirteen".