13621212631 has 8 divisors (see below), whose sum is σ = 14673289904. Its totient is φ = 12569748480.

The previous prime is 13621212589. The next prime is 13621212673.

13621212631 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (13621212589) and next prime (13621212673).

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 13621212631 - 2⁷ = 13621212503 is a prime.

It is a super-2 number, since 2×13621212631² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13621212631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13621212431) 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, 106605 + ... + 196486.

It is an arithmetic number, because the mean of its divisors is an integer number (1834161238).

Almost surely, 2^13621212631 is an apocalyptic number.

13621212631 is a deficient number, since it is larger than the sum of its proper divisors (1052077273).

13621212631 is a wasteful number, since it uses less digits than its factorization.

13621212631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306561.

The product of its digits is 2592, while the sum is 28.

The spelling of 13621212631 in words is "thirteen billion, six hundred twenty-one million, two hundred twelve thousand, six hundred thirty-one".