31003312130 has 32 divisors (see below), whose sum is σ = 67134994560. Its totient is φ = 10070248320.

The previous prime is 31003312127. The next prime is 31003312217. The reversal of 31003312130 is 3121330013.

It is a super-2 number, since 2×31003312130² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31003312099 and 31003312108.

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, 11654051 + ... + 11656710.

It is an arithmetic number, because the mean of its divisors is an integer number (2097968580).

Almost surely, 2^31003312130 is an apocalyptic number.

31003312130 is an abundant number, since it is smaller than the sum of its proper divisors (36131682430).

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

31003312130 is a wasteful number, since it uses less digits than its factorization.

31003312130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23310794.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 31003312130 its reverse (3121330013), we get a palindrome (34124642143).

The spelling of 31003312130 in words is "thirty-one billion, three million, three hundred twelve thousand, one hundred thirty".