31742298 has 144 divisors (see below), whose sum is σ = 88831080. Its totient is φ = 8128512.

The previous prime is 31742257. The next prime is 31742311. The reversal of 31742298 is 89224713.

It can be written as a sum of positive squares in 4 ways, for example, as 30503529 + 1238769 = 5523^2 + 1113^2 .

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 434790 + ... + 434862.

Almost surely, 2^31742298 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31742298, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44415540).

31742298 is an abundant number, since it is smaller than the sum of its proper divisors (57088782).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31742298 is a wasteful number, since it uses less digits than its factorization.

31742298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141 (or 131 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 31742298 is about 5634.0303513559. The cubic root of 31742298 is about 316.6256697926.

The spelling of 31742298 in words is "thirty-one million, seven hundred forty-two thousand, two hundred ninety-eight".