30713525 has 6 divisors (see below), whose sum is σ = 38084802. Its totient is φ = 24570800.

The previous prime is 30713521. The next prime is 30713531. The reversal of 30713525 is 52531703.

It can be written as a sum of positive squares in 3 ways, for example, as 320356 + 30393169 = 566^2 + 5513^2 .

It is not a de Polignac number, because 30713525 - 2² = 30713521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30713494 and 30713503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30713521) 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, 614246 + ... + 614295.

It is an arithmetic number, because the mean of its divisors is an integer number (6347467).

Almost surely, 2^30713525 is an apocalyptic number.

It is an amenable number.

30713525 is a deficient number, since it is larger than the sum of its proper divisors (7371277).

30713525 is a wasteful number, since it uses less digits than its factorization.

30713525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1228551 (or 1228546 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 26.

The square root of 30713525 is about 5541.9784373453. The cubic root of 30713525 is about 313.1674056085.

The spelling of 30713525 in words is "thirty million, seven hundred thirteen thousand, five hundred twenty-five".