23031031323021 has 32 divisors (see below), whose sum is σ = 34277360467968. Its totient is φ = 13687140376320.

The previous prime is 23031031323017. The next prime is 23031031323107. The reversal of 23031031323021 is 12032313013032.

It is not a de Polignac number, because 23031031323021 - 2² = 23031031323017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23031031322982 and 23031031323000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23031031323121) 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, 154897845 + ... + 155046458.

It is an arithmetic number, because the mean of its divisors is an integer number (1071167514624).

Almost surely, 2^{23031031323021} is an apocalyptic number.

It is an amenable number.

23031031323021 is a deficient number, since it is larger than the sum of its proper divisors (11246329144947).

23031031323021 is a wasteful number, since it uses less digits than its factorization.

23031031323021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309944401.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 23031031323021 its reverse (12032313013032), we get a palindrome (35063344336053).

The spelling of 23031031323021 in words is "twenty-three trillion, thirty-one billion, thirty-one million, three hundred twenty-three thousand, twenty-one".