83213453631 has 32 divisors (see below), whose sum is σ = 138433609728. Its totient is φ = 43195033440.

The previous prime is 83213453581. The next prime is 83213453711. The reversal of 83213453631 is 13635431238.

It is not a de Polignac number, because 83213453631 - 2²³ = 83205065023 is a prime.

It is a super-2 number, since 2×83213453631² (a number of 23 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 83213453631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83213453431) 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, 170806 + ... + 442268.

It is an arithmetic number, because the mean of its divisors is an integer number (4326050304).

Almost surely, 2^83213453631 is an apocalyptic number.

83213453631 is a deficient number, since it is larger than the sum of its proper divisors (55220156097).

83213453631 is a wasteful number, since it uses less digits than its factorization.

83213453631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272811.

The product of its digits is 155520, while the sum is 39.

Adding to 83213453631 its reverse (13635431238), we get a palindrome (96848884869).

The spelling of 83213453631 in words is "eighty-three billion, two hundred thirteen million, four hundred fifty-three thousand, six hundred thirty-one".