31332120023 has 2 divisors, whose sum is σ = 31332120024. Its totient is φ = 31332120022.

The previous prime is 31332120007. The next prime is 31332120037. The reversal of 31332120023 is 32002123313.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31332120023 - 2⁴ = 31332120007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31332119977 and 31332120004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31332125023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15666060011 + 15666060012.

It is an arithmetic number, because the mean of its divisors is an integer number (15666060012).

Almost surely, 2^31332120023 is an apocalyptic number.

31332120023 is a deficient number, since it is larger than the sum of its proper divisors (1).

31332120023 is an equidigital number, since it uses as much as digits as its factorization.

31332120023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 31332120023 its reverse (32002123313), we get a palindrome (63334243336).

The spelling of 31332120023 in words is "thirty-one billion, three hundred thirty-two million, one hundred twenty thousand, twenty-three".