31373121032 has 36 divisors (see below), whose sum is σ = 64669806285. Its totient is φ = 14258004640.

The previous prime is 31373121029. The next prime is 31373121037. The reversal of 31373121032 is 23012137313.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 25983505636 + 5389615396 = 161194^2 + 73414^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=125246.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31373120992 and 31373121010.

It is not an unprimeable number, because it can be changed into a prime (31373121037) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5507978 + ... + 5513670.

Almost surely, 2^31373121032 is an apocalyptic number.

It is an amenable number.

31373121032 is an abundant number, since it is smaller than the sum of its proper divisors (33296685253).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31373121032 is an frugal number, since it uses more digits than its factorization.

31373121032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11414 (or 5706 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 26.

Adding to 31373121032 its reverse (23012137313), we get a palindrome (54385258345).

The spelling of 31373121032 in words is "thirty-one billion, three hundred seventy-three million, one hundred twenty-one thousand, thirty-two".