30946131 has 20 divisors (see below), whose sum is σ = 46887984. Its totient is φ = 20336400.

The previous prime is 30946129. The next prime is 30946169. The reversal of 30946131 is 13164903.

It is not a de Polignac number, because 30946131 - 2¹ = 30946129 is a prime.

It is a super-2 number, since 2×30946131² = 1915326047738322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 30946095 and 30946104.

It is not an unprimeable number, because it can be changed into a prime (30906131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3061 + ... + 8441.

Almost surely, 2^30946131 is an apocalyptic number.

30946131 is a deficient number, since it is larger than the sum of its proper divisors (15941853).

30946131 is an equidigital number, since it uses as much as digits as its factorization.

30946131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5464 (or 5455 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 30946131 is about 5562.9246804177. The cubic root of 30946131 is about 313.9559994872.

The spelling of 30946131 in words is "thirty million, nine hundred forty-six thousand, one hundred thirty-one".