30961373 has 2 divisors, whose sum is σ = 30961374. Its totient is φ = 30961372.

The previous prime is 30961363. The next prime is 30961379. The reversal of 30961373 is 37316903.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20994724 + 9966649 = 4582^2 + 3157^2 .

It is a cyclic number.

It is not a de Polignac number, because 30961373 - 2¹⁴ = 30944989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30961379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15480686 + 15480687.

It is an arithmetic number, because the mean of its divisors is an integer number (15480687).

Almost surely, 2^30961373 is an apocalyptic number.

It is an amenable number.

30961373 is a deficient number, since it is larger than the sum of its proper divisors (1).

30961373 is an equidigital number, since it uses as much as digits as its factorization.

30961373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10206, while the sum is 32.

The square root of 30961373 is about 5564.2944745942. The cubic root of 30961373 is about 314.0075356218.

The spelling of 30961373 in words is "thirty million, nine hundred sixty-one thousand, three hundred seventy-three".