20245523031 has 12 divisors (see below), whose sum is σ = 29923616008. Its totient is φ = 13183131024.

The previous prime is 20245523029. The next prime is 20245523047. The reversal of 20245523031 is 13032554202.

It is a happy number.

20245523031 is a `hidden beast` number, since 202 + 455 + 2 + 3 + 0 + 3 + 1 = 666.

It is not a de Polignac number, because 20245523031 - 2¹ = 20245523029 is a prime.

It is a super-2 number, since 2×20245523031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20245522986 and 20245523004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20245523231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26156620 + ... + 26157393.

Almost surely, 2^20245523031 is an apocalyptic number.

20245523031 is a deficient number, since it is larger than the sum of its proper divisors (9678092977).

20245523031 is a wasteful number, since it uses less digits than its factorization.

20245523031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52314062 (or 52314059 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The spelling of 20245523031 in words is "twenty billion, two hundred forty-five million, five hundred twenty-three thousand, thirty-one".