31030302130 has 16 divisors (see below), whose sum is σ = 59140105560. Its totient is φ = 11681996032.

The previous prime is 31030302077. The next prime is 31030302131. The reversal of 31030302130 is 3120303013.

It can be written as a sum of positive squares in 4 ways, for example, as 25532524521 + 5497777609 = 159789^2 + 74147^2 .

It is not an unprimeable number, because it can be changed into a prime (31030302131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91265425 + ... + 91265764.

Almost surely, 2^31030302130 is an apocalyptic number.

31030302130 is a deficient number, since it is larger than the sum of its proper divisors (28109803430).

31030302130 is a wasteful number, since it uses less digits than its factorization.

31030302130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182531213.

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

Adding to 31030302130 its reverse (3120303013), we get a palindrome (34150605143).

The spelling of 31030302130 in words is "thirty-one billion, thirty million, three hundred two thousand, one hundred thirty".