31203031130013 has 32 divisors (see below), whose sum is σ = 42467249041920. Its totient is φ = 20373069764160.

The previous prime is 31203031130009. The next prime is 31203031130069. The reversal of 31203031130013 is 31003113030213.

It is not a de Polignac number, because 31203031130013 - 2² = 31203031130009 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31203031030013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 441765006 + ... + 441835632.

It is an arithmetic number, because the mean of its divisors is an integer number (1327101532560).

Almost surely, 2^{31203031130013} is an apocalyptic number.

It is an amenable number.

31203031130013 is a deficient number, since it is larger than the sum of its proper divisors (11264217911907).

31203031130013 is a wasteful number, since it uses less digits than its factorization.

31203031130013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79977.

The product of its (nonzero) digits is 486, while the sum is 21.

Adding to 31203031130013 its reverse (31003113030213), we get a palindrome (62206144160226).

The spelling of 31203031130013 in words is "thirty-one trillion, two hundred three billion, thirty-one million, one hundred thirty thousand, thirteen".