31230311303213 has 24 divisors (see below), whose sum is σ = 34824567549024. Its totient is φ = 27775284048800.

The previous prime is 31230311303209. The next prime is 31230311303227.

31230311303213 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 31230311303213 - 2² = 31230311303209 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31230311309213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57000098 + ... + 57545388.

It is an arithmetic number, because the mean of its divisors is an integer number (1451023647876).

Almost surely, 2^{31230311303213} is an apocalyptic number.

It is an amenable number.

31230311303213 is a deficient number, since it is larger than the sum of its proper divisors (3594256245811).

31230311303213 is a wasteful number, since it uses less digits than its factorization.

31230311303213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547753 (or 547706 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 26.

It can be divided in two parts, 3123031 and 1303213, that added together give a palindrome (4426244).

The spelling of 31230311303213 in words is "thirty-one trillion, two hundred thirty billion, three hundred eleven million, three hundred three thousand, two hundred thirteen".