20234535631 has 16 divisors (see below), whose sum is σ = 20565964800. Its totient is φ = 19906380928.

The previous prime is 20234535577. The next prime is 20234535647. The reversal of 20234535631 is 13653543202.

It is a cyclic number.

It is not a de Polignac number, because 20234535631 - 2²³ = 20226147023 is a prime.

It is a super-2 number, since 2×20234535631² (a number of 21 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 (20234535331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9694470 + ... + 9696556.

It is an arithmetic number, because the mean of its divisors is an integer number (1285372800).

Almost surely, 2^20234535631 is an apocalyptic number.

20234535631 is a deficient number, since it is larger than the sum of its proper divisors (331429169).

20234535631 is a wasteful number, since it uses less digits than its factorization.

20234535631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2798.

The product of its (nonzero) digits is 64800, while the sum is 34.

The spelling of 20234535631 in words is "twenty billion, two hundred thirty-four million, five hundred thirty-five thousand, six hundred thirty-one".