22631290969 has 9 divisors (see below), whose sum is σ = 26327420661. Its totient is φ = 19397346780.

The previous prime is 22631290961. The next prime is 22631291009. The reversal of 22631290969 is 96909213622.

The square root of 22631290969 is 150437.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 22631290969 - 2³ = 22631290961 is a prime.

It is a super-2 number, since 2×22631290969² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22631290961) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1042314 + ... + 1063804.

Almost surely, 2^22631290969 is an apocalyptic number.

22631290969 is the 150437-th square number.

22631290969 is the 75219-th centered octagonal number.

It is an amenable number.

22631290969 is a deficient number, since it is larger than the sum of its proper divisors (3696129692).

22631290969 is an frugal number, since it uses more digits than its factorization.

22631290969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42996 (or 21498 counting only the distinct ones).

The product of its (nonzero) digits is 629856, while the sum is 49.

Multiplying 22631290969 by its sum of digits (49), we get a square (1108933257481 = 1053059²).

22631290969 divided by its sum of digits (49) gives a square (461863081 = 21491²).

It can be divided in two parts, 22631 and 290969, that added together give a square (313600 = 560²).

The spelling of 22631290969 in words is "twenty-two billion, six hundred thirty-one million, two hundred ninety thousand, nine hundred sixty-nine".