23015461531 has 2 divisors, whose sum is σ = 23015461532. Its totient is φ = 23015461530.

The previous prime is 23015461529. The next prime is 23015461541. The reversal of 23015461531 is 13516451032.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23015461531 - 2¹ = 23015461529 is a prime.

It is a super-2 number, since 2×23015461531² (a number of 22 digits) contains 22 as substring.

Together with 23015461529, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 23015461493 and 23015461502.

It is not a weakly prime, because it can be changed into another prime (23015461541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11507730765 + 11507730766.

It is an arithmetic number, because the mean of its divisors is an integer number (11507730766).

Almost surely, 2^23015461531 is an apocalyptic number.

23015461531 is a deficient number, since it is larger than the sum of its proper divisors (1).

23015461531 is an equidigital number, since it uses as much as digits as its factorization.

23015461531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 31.

The spelling of 23015461531 in words is "twenty-three billion, fifteen million, four hundred sixty-one thousand, five hundred thirty-one".