3261620530631 has 8 divisors (see below), whose sum is σ = 3316957257600. Its totient is φ = 3206285637880.

The previous prime is 3261620530579. The next prime is 3261620530657. The reversal of 3261620530631 is 1360350261623.

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 3261620530631 - 2¹⁴ = 3261620514247 is a prime.

It is a super-2 number, since 2×3261620530631² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3261620530031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3401300 + ... + 4253478.

It is an arithmetic number, because the mean of its divisors is an integer number (414619657200).

Almost surely, 2^{3261620530631} is an apocalyptic number.

3261620530631 is a deficient number, since it is larger than the sum of its proper divisors (55336726969).

3261620530631 is an equidigital number, since it uses as much as digits as its factorization.

3261620530631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917109.

The product of its (nonzero) digits is 116640, while the sum is 38.

The spelling of 3261620530631 in words is "three trillion, two hundred sixty-one billion, six hundred twenty million, five hundred thirty thousand, six hundred thirty-one".