23040154531 has 2 divisors, whose sum is σ = 23040154532. Its totient is φ = 23040154530.

The previous prime is 23040154517. The next prime is 23040154537. The reversal of 23040154531 is 13545104032.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23040154531 - 2⁹ = 23040154019 is a prime.

It is a super-2 number, since 2×23040154531² (a number of 22 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 23040154531.

It is not a weakly prime, because it can be changed into another prime (23040154537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11520077265 + 11520077266.

It is an arithmetic number, because the mean of its divisors is an integer number (11520077266).

Almost surely, 2^23040154531 is an apocalyptic number.

23040154531 is a deficient number, since it is larger than the sum of its proper divisors (1).

23040154531 is an equidigital number, since it uses as much as digits as its factorization.

23040154531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 23040154531 its reverse (13545104032), we get a palindrome (36585258563).

The spelling of 23040154531 in words is "twenty-three billion, forty million, one hundred fifty-four thousand, five hundred thirty-one".