29931125 has 32 divisors (see below), whose sum is σ = 43330560. Its totient is φ = 20217600.

The previous prime is 29931091. The next prime is 29931131. The reversal of 29931125 is 52113992.

It is a de Polignac number, because none of the positive numbers 2^k-29931125 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 29931091 and 29931100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68909 + ... + 69341.

It is an arithmetic number, because the mean of its divisors is an integer number (1354080).

Almost surely, 2^29931125 is an apocalyptic number.

29931125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

29931125 is a deficient number, since it is larger than the sum of its proper divisors (13399435).

29931125 is an equidigital number, since it uses as much as digits as its factorization.

29931125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534 (or 524 counting only the distinct ones).

The product of its digits is 4860, while the sum is 32.

The square root of 29931125 is about 5470.9345636737. The cubic root of 29931125 is about 310.4852787891.

The spelling of 29931125 in words is "twenty-nine million, nine hundred thirty-one thousand, one hundred twenty-five".