30313001997 has 6 divisors (see below), whose sum is σ = 43785447342. Its totient is φ = 20208667992.

The previous prime is 30313001959. The next prime is 30313002011. The reversal of 30313001997 is 79910031303.

It can be written as a sum of positive squares in only one way, i.e., 30107108196 + 205893801 = 173514^2 + 14349^2 .

It is not a de Polignac number, because 30313001997 - 2⁶ = 30313001933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30318001997) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1684055658 + ... + 1684055675.

It is an arithmetic number, because the mean of its divisors is an integer number (7297574557).

Almost surely, 2^30313001997 is an apocalyptic number.

It is an amenable number.

30313001997 is a deficient number, since it is larger than the sum of its proper divisors (13472445345).

30313001997 is a wasteful number, since it uses less digits than its factorization.

30313001997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3368111339 (or 3368111336 counting only the distinct ones).

The product of its (nonzero) digits is 15309, while the sum is 36.

The spelling of 30313001997 in words is "thirty billion, three hundred thirteen million, one thousand, nine hundred ninety-seven".