30984131 has 2 divisors, whose sum is σ = 30984132. Its totient is φ = 30984130.

The previous prime is 30984119. The next prime is 30984137. The reversal of 30984131 is 13148903.

It is a strong prime.

It is an emirp because it is prime and its reverse (13148903) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30984131 - 2¹⁸ = 30721987 is a prime.

It is a super-2 number, since 2×30984131² = 1920032747650322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 30984094 and 30984103.

It is not a weakly prime, because it can be changed into another prime (30984137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15492065 + 15492066.

It is an arithmetic number, because the mean of its divisors is an integer number (15492066).

Almost surely, 2^30984131 is an apocalyptic number.

30984131 is a deficient number, since it is larger than the sum of its proper divisors (1).

30984131 is an equidigital number, since it uses as much as digits as its factorization.

30984131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 30984131 is about 5566.3391021389. The cubic root of 30984131 is about 314.0844533271.

The spelling of 30984131 in words is "thirty million, nine hundred eighty-four thousand, one hundred thirty-one".