30102131009 has 2 divisors, whose sum is σ = 30102131010. Its totient is φ = 30102131008.

The previous prime is 30102130987. The next prime is 30102131023. The reversal of 30102131009 is 90013120103.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22268995984 + 7833135025 = 149228^2 + 88505^2 .

It is a cyclic number.

It is not a de Polignac number, because 30102131009 - 2⁸ = 30102130753 is a prime.

It is a super-2 number, since 2×30102131009² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (30102131069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15051065504 + 15051065505.

It is an arithmetic number, because the mean of its divisors is an integer number (15051065505).

Almost surely, 2^30102131009 is an apocalyptic number.

It is an amenable number.

30102131009 is a deficient number, since it is larger than the sum of its proper divisors (1).

30102131009 is an equidigital number, since it uses as much as digits as its factorization.

30102131009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 20.

The spelling of 30102131009 in words is "thirty billion, one hundred two million, one hundred thirty-one thousand, nine".