20123022431 has 2 divisors, whose sum is σ = 20123022432. Its totient is φ = 20123022430.

The previous prime is 20123022419. The next prime is 20123022463. The reversal of 20123022431 is 13422032102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20123022431 - 2²² = 20118828127 is a prime.

It is a super-2 number, since 2×20123022431² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20123025431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10061511215 + 10061511216.

It is an arithmetic number, because the mean of its divisors is an integer number (10061511216).

Almost surely, 2^20123022431 is an apocalyptic number.

20123022431 is a deficient number, since it is larger than the sum of its proper divisors (1).

20123022431 is an equidigital number, since it uses as much as digits as its factorization.

20123022431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20123022431 its reverse (13422032102), we get a palindrome (33545054533).

The spelling of 20123022431 in words is "twenty billion, one hundred twenty-three million, twenty-two thousand, four hundred thirty-one".