31445230120 has 32 divisors (see below), whose sum is σ = 73191486600. Its totient is φ = 12144364288.

The previous prime is 31445230087. The next prime is 31445230127. The reversal of 31445230120 is 2103254413.

It can be written as a sum of positive squares in 4 ways, for example, as 30931663876 + 513566244 = 175874^2 + 22662^2 .

It is not an unprimeable number, because it can be changed into a prime (31445230127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13552819 + ... + 13555138.

Almost surely, 2^31445230120 is an apocalyptic number.

It is an amenable number.

31445230120 is an abundant number, since it is smaller than the sum of its proper divisors (41746256480).

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

31445230120 is a wasteful number, since it uses less digits than its factorization.

31445230120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27107997 (or 27107993 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 31445230120 its reverse (2103254413), we get a palindrome (33548484533).

The spelling of 31445230120 in words is "thirty-one billion, four hundred forty-five million, two hundred thirty thousand, one hundred twenty".