30731325 has 24 divisors (see below), whose sum is σ = 53800128. Its totient is φ = 15425280.

The previous prime is 30731299. The next prime is 30731339. The reversal of 30731325 is 52313703.

It is not a de Polignac number, because 30731325 - 2⁵ = 30731293 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30731295 and 30731304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10777 + ... + 13326.

It is an arithmetic number, because the mean of its divisors is an integer number (2241672).

Almost surely, 2^30731325 is an apocalyptic number.

It is an amenable number.

30731325 is a deficient number, since it is larger than the sum of its proper divisors (23068803).

30731325 is a wasteful number, since it uses less digits than its factorization.

30731325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24133 (or 24128 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 24.

The square root of 30731325 is about 5543.5841294239. The cubic root of 30731325 is about 313.2278925687.

The spelling of 30731325 in words is "thirty million, seven hundred thirty-one thousand, three hundred twenty-five".