31230100130 has 32 divisors (see below), whose sum is σ = 56691868464. Its totient is φ = 12386278656.

The previous prime is 31230100127. The next prime is 31230100151. The reversal of 31230100130 is 3100103213.

It can be written as a sum of positive squares in 8 ways, for example, as 25666282849 + 5563817281 = 160207^2 + 74591^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 621092 + ... + 669488.

Almost surely, 2^31230100130 is an apocalyptic number.

31230100130 is a deficient number, since it is larger than the sum of its proper divisors (25461768334).

31230100130 is a wasteful number, since it uses less digits than its factorization.

31230100130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48950.

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 31230100130 its reverse (3100103213), we get a palindrome (34330203343).

The spelling of 31230100130 in words is "thirty-one billion, two hundred thirty million, one hundred thousand, one hundred thirty".