31032130313 has 2 divisors, whose sum is σ = 31032130314. Its totient is φ = 31032130312.

The previous prime is 31032130309. The next prime is 31032130351. The reversal of 31032130313 is 31303123013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30049182409 + 982947904 = 173347^2 + 31352^2 .

It is a cyclic number.

It is not a de Polignac number, because 31032130313 - 2² = 31032130309 is a prime.

It is a super-2 number, since 2×31032130313² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31032130303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15516065156 + 15516065157.

It is an arithmetic number, because the mean of its divisors is an integer number (15516065157).

Almost surely, 2^31032130313 is an apocalyptic number.

It is an amenable number.

31032130313 is a deficient number, since it is larger than the sum of its proper divisors (1).

31032130313 is an equidigital number, since it uses as much as digits as its factorization.

31032130313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 20.

Adding to 31032130313 its reverse (31303123013), we get a palindrome (62335253326).

The spelling of 31032130313 in words is "thirty-one billion, thirty-two million, one hundred thirty thousand, three hundred thirteen".