1313131012021 has 8 divisors (see below), whose sum is σ = 1314012569760. Its totient is φ = 1312249570128.

The previous prime is 1313131011989. The next prime is 1313131012033. The reversal of 1313131012021 is 1202101313131.

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

It is a cyclic number.

It is not a de Polignac number, because 1313131012021 - 2⁵ = 1313131011989 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1313131012021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313131012091) 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, 43772095 + ... + 43802083.

It is an arithmetic number, because the mean of its divisors is an integer number (164251571220).

Almost surely, 2^{1313131012021} is an apocalyptic number.

It is an amenable number.

1313131012021 is a deficient number, since it is larger than the sum of its proper divisors (881557739).

1313131012021 is a wasteful number, since it uses less digits than its factorization.

1313131012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57923.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 1313131012021 its reverse (1202101313131), we get a palindrome (2515232325152).

The spelling of 1313131012021 in words is "one trillion, three hundred thirteen billion, one hundred thirty-one million, twelve thousand, twenty-one".