1213713361531 has 8 divisors (see below), whose sum is σ = 1330911309744. Its totient is φ = 1097658808320.

The previous prime is 1213713361499. The next prime is 1213713361537. The reversal of 1213713361531 is 1351633173121.

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 1213713361531 - 2⁵ = 1213713361499 is a prime.

It is a super-2 number, since 2×1213713361531² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213713361537) 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, 285846526 + ... + 285850771.

It is an arithmetic number, because the mean of its divisors is an integer number (166363913718).

Almost surely, 2^{1213713361531} is an apocalyptic number.

1213713361531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1213713361531 is a deficient number, since it is larger than the sum of its proper divisors (117197948213).

1213713361531 is a wasteful number, since it uses less digits than its factorization.

1213713361531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571697501.

The product of its digits is 34020, while the sum is 37.

The spelling of 1213713361531 in words is "one trillion, two hundred thirteen billion, seven hundred thirteen million, three hundred sixty-one thousand, five hundred thirty-one".