31949425 has 12 divisors (see below), whose sum is σ = 40461696. Its totient is φ = 25014800.

The previous prime is 31949383. The next prime is 31949429. The reversal of 31949425 is 52494913.

It is not a de Polignac number, because 31949425 - 2⁷ = 31949297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31949429) 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 11 ways as a sum of consecutive naturals, for example, 12421 + ... + 14770.

It is an arithmetic number, because the mean of its divisors is an integer number (3371808).

Almost surely, 2^31949425 is an apocalyptic number.

It is an amenable number.

31949425 is a deficient number, since it is larger than the sum of its proper divisors (8512271).

31949425 is a wasteful number, since it uses less digits than its factorization.

31949425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27248 (or 27243 counting only the distinct ones).

The product of its digits is 38880, while the sum is 37.

The square root of 31949425 is about 5652.3822411440. The cubic root of 31949425 is about 317.3128663516.

The spelling of 31949425 in words is "thirty-one million, nine hundred forty-nine thousand, four hundred twenty-five".