23120554531 has 2 divisors, whose sum is σ = 23120554532. Its totient is φ = 23120554530.

The previous prime is 23120554439. The next prime is 23120554553. The reversal of 23120554531 is 13545502132.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23120554531 is a prime.

It is a super-2 number, since 2×23120554531² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23120554493 and 23120554502.

It is not a weakly prime, because it can be changed into another prime (23120554031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11560277265 + 11560277266.

It is an arithmetic number, because the mean of its divisors is an integer number (11560277266).

Almost surely, 2^23120554531 is an apocalyptic number.

23120554531 is a deficient number, since it is larger than the sum of its proper divisors (1).

23120554531 is an equidigital number, since it uses as much as digits as its factorization.

23120554531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18000, while the sum is 31.

The spelling of 23120554531 in words is "twenty-three billion, one hundred twenty million, five hundred fifty-four thousand, five hundred thirty-one".