31120102313 has 4 divisors (see below), whose sum is σ = 31584581520. Its totient is φ = 30655623108.

The previous prime is 31120102291. The next prime is 31120102357. The reversal of 31120102313 is 31320102113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31120102313 - 2⁶ = 31120102249 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31120102291 and 31120102300.

It is not an unprimeable number, because it can be changed into a prime (31120102813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 232239503 + ... + 232239636.

It is an arithmetic number, because the mean of its divisors is an integer number (7896145380).

Almost surely, 2^31120102313 is an apocalyptic number.

It is an amenable number.

31120102313 is a deficient number, since it is larger than the sum of its proper divisors (464479207).

31120102313 is an equidigital number, since it uses as much as digits as its factorization.

31120102313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464479206.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31120102313 its reverse (31320102113), we get a palindrome (62440204426).

The spelling of 31120102313 in words is "thirty-one billion, one hundred twenty million, one hundred two thousand, three hundred thirteen".