31130322330 has 32 divisors (see below), whose sum is σ = 74723041728. Its totient is φ = 8300278400.

The previous prime is 31130322299. The next prime is 31130322343. The reversal of 31130322330 is 3322303113.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31130322297 and 31130322306.

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, 163270 + ... + 298190.

It is an arithmetic number, because the mean of its divisors is an integer number (2335095054).

Almost surely, 2^31130322330 is an apocalyptic number.

31130322330 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31130322330 is an abundant number, since it is smaller than the sum of its proper divisors (43592719398).

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

31130322330 is a wasteful number, since it uses less digits than its factorization.

31130322330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142622.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 31130322330 its reverse (3322303113), we get a palindrome (34452625443).

The spelling of 31130322330 in words is "thirty-one billion, one hundred thirty million, three hundred twenty-two thousand, three hundred thirty".