31031311313013 has 8 divisors (see below), whose sum is σ = 45136452818976. Its totient is φ = 18806855341200.

The previous prime is 31031311313011. The next prime is 31031311313027.

31031311313013 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 31031311313013 - 2¹ = 31031311313011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31031311313011) 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, 470171383498 + ... + 470171383563.

It is an arithmetic number, because the mean of its divisors is an integer number (5642056602372).

Almost surely, 2^{31031311313013} is an apocalyptic number.

31031311313013 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

31031311313013 is a deficient number, since it is larger than the sum of its proper divisors (14105141505963).

31031311313013 is a wasteful number, since it uses less digits than its factorization.

31031311313013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940342767075.

The product of its (nonzero) digits is 729, while the sum is 24.

It can be divided in two parts, 3103131 and 1313013, that added together give a palindrome (4416144).

The spelling of 31031311313013 in words is "thirty-one trillion, thirty-one billion, three hundred eleven million, three hundred thirteen thousand, thirteen".