31742494 has 12 divisors (see below), whose sum is σ = 55387584. Its totient is φ = 13603884.

The previous prime is 31742453. The next prime is 31742497. The reversal of 31742494 is 49424713.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31742497) 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 5 ways as a sum of consecutive naturals, for example, 161854 + ... + 162049.

It is an arithmetic number, because the mean of its divisors is an integer number (4615632).

Almost surely, 2^31742494 is an apocalyptic number.

31742494 is a deficient number, since it is larger than the sum of its proper divisors (23645090).

31742494 is a wasteful number, since it uses less digits than its factorization.

31742494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323919 (or 323912 counting only the distinct ones).

The product of its digits is 24192, while the sum is 34.

The square root of 31742494 is about 5634.0477456266. The cubic root of 31742494 is about 316.6263214836.

The spelling of 31742494 in words is "thirty-one million, seven hundred forty-two thousand, four hundred ninety-four".