31120322230100 has 18 divisors (see below), whose sum is σ = 67531099239534. Its totient is φ = 12448128892000.

The previous prime is 31120322230069. The next prime is 31120322230139. The reversal of 31120322230100 is 103222302113.

It can be written as a sum of positive squares in 3 ways, for example, as 108922441156 + 31011399788944 = 330034^2 + 5568788^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 155601611051 + ... + 155601611250.

Almost surely, 2^{31120322230100} is an apocalyptic number.

It is an amenable number.

31120322230100 is an abundant number, since it is smaller than the sum of its proper divisors (36410777009434).

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

31120322230100 is a wasteful number, since it uses less digits than its factorization.

31120322230100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311203222315 (or 311203222308 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 31120322230100 its reverse (103222302113), we get a palindrome (31223544532213).

The spelling of 31120322230100 in words is "thirty-one trillion, one hundred twenty billion, three hundred twenty-two million, two hundred thirty thousand, one hundred".