23403453201531 has 72 divisors (see below), whose sum is σ = 38077340757456. Its totient is φ = 13767815980800.

The previous prime is 23403453201487. The next prime is 23403453201547. The reversal of 23403453201531 is 13510235430432.

23403453201531 is a `hidden beast` number, since 2 + 3 + 40 + 34 + 53 + 2 + 0 + 1 + 531 = 666.

It is not a de Polignac number, because 23403453201531 - 2⁶ = 23403453201467 is a prime.

It is a super-2 number, since 2×23403453201531² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23403453201551) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 8760636 + ... + 11115558.

Almost surely, 2^{23403453201531} is an apocalyptic number.

23403453201531 is a deficient number, since it is larger than the sum of its proper divisors (14673887555925).

23403453201531 is a wasteful number, since it uses less digits than its factorization.

23403453201531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2355101 (or 2355069 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 36.

Adding to 23403453201531 its reverse (13510235430432), we get a palindrome (36913688631963).

The spelling of 23403453201531 in words is "twenty-three trillion, four hundred three billion, four hundred fifty-three million, two hundred one thousand, five hundred thirty-one".