23223132021531 has 32 divisors (see below), whose sum is σ = 33363042628608. Its totient is φ = 14283871430400.

The previous prime is 23223132021521. The next prime is 23223132021587. The reversal of 23223132021531 is 13512023132232.

It is not a de Polignac number, because 23223132021531 - 2²⁹ = 23222595150619 is a prime.

It is a super-2 number, since 2×23223132021531² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23223132021511) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 743195950 + ... + 743227196.

It is an arithmetic number, because the mean of its divisors is an integer number (1042595082144).

Almost surely, 2^{23223132021531} is an apocalyptic number.

23223132021531 is a deficient number, since it is larger than the sum of its proper divisors (10139910607077).

23223132021531 is a wasteful number, since it uses less digits than its factorization.

23223132021531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40371.

The product of its (nonzero) digits is 12960, while the sum is 30.

Adding to 23223132021531 its reverse (13512023132232), we get a palindrome (36735155153763).

The spelling of 23223132021531 in words is "twenty-three trillion, two hundred twenty-three billion, one hundred thirty-two million, twenty-one thousand, five hundred thirty-one".