31130320030 has 16 divisors (see below), whose sum is σ = 56036645280. Its totient is φ = 12451668192.

The previous prime is 31130320027. The next prime is 31130320057. The reversal of 31130320030 is 3002303113.

It is a junction number, because it is equal to n+sod(n) for n = 31130319986 and 31130320013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 401047 + ... + 472333.

It is an arithmetic number, because the mean of its divisors is an integer number (3502290330).

Almost surely, 2^31130320030 is an apocalyptic number.

31130320030 is a deficient number, since it is larger than the sum of its proper divisors (24906325250).

31130320030 is a wasteful number, since it uses less digits than its factorization.

31130320030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114963.

The product of its (nonzero) digits is 162, while the sum is 16.

Adding to 31130320030 its reverse (3002303113), we get a palindrome (34132623143).

The spelling of 31130320030 in words is "thirty-one billion, one hundred thirty million, three hundred twenty thousand, thirty".