31103012301313 has 4 divisors (see below), whose sum is σ = 31104704632240. Its totient is φ = 31101319970388.

The previous prime is 31103012301311. The next prime is 31103012301377. The reversal of 31103012301313 is 31310321030113.

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 31103012301313 - 2¹ = 31103012301311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31103012301311) 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, 846137895 + ... + 846174652.

It is an arithmetic number, because the mean of its divisors is an integer number (7776176158060).

Almost surely, 2^{31103012301313} is an apocalyptic number.

It is an amenable number.

31103012301313 is a deficient number, since it is larger than the sum of its proper divisors (1692330927).

31103012301313 is a wasteful number, since it uses less digits than its factorization.

31103012301313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1692330926.

The product of its (nonzero) digits is 486, while the sum is 22.

Adding to 31103012301313 its reverse (31310321030113), we get a palindrome (62413333331426).

The spelling of 31103012301313 in words is "thirty-one trillion, one hundred three billion, twelve million, three hundred one thousand, three hundred thirteen".