31013010100 has 36 divisors (see below), whose sum is σ = 67390203244. Its totient is φ = 12388250880.

The previous prime is 31013010097. The next prime is 31013010109. The reversal of 31013010100 is 101031013.

It can be written as a sum of positive squares in 6 ways, for example, as 532040356 + 30480969744 = 23066^2 + 174588^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31013010109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 138249 + ... + 284848.

Almost surely, 2^31013010100 is an apocalyptic number.

It is an amenable number.

31013010100 is an abundant number, since it is smaller than the sum of its proper divisors (36377193144).

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

31013010100 is a wasteful number, since it uses less digits than its factorization.

31013010100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423844 (or 423837 counting only the distinct ones).

The product of its (nonzero) digits is 9, while the sum is 10.

Adding to 31013010100 its reverse (101031013), we get a palindrome (31114041113).

The spelling of 31013010100 in words is "thirty-one billion, thirteen million, ten thousand, one hundred".