31354974 has 48 divisors (see below), whose sum is σ = 80327520. Its totient is φ = 8648640.

The previous prime is 31354963. The next prime is 31354979. The reversal of 31354974 is 47945313.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31354979) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 637 + ... + 7944.

It is an arithmetic number, because the mean of its divisors is an integer number (1673490).

Almost surely, 2^31354974 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31354974, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40163760).

31354974 is an abundant number, since it is smaller than the sum of its proper divisors (48972546).

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

31354974 is a wasteful number, since it uses less digits than its factorization.

31354974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8625 (or 8622 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 31354974 is about 5599.5512320185. The cubic root of 31354974 is about 315.3325588329.

The spelling of 31354974 in words is "thirty-one million, three hundred fifty-four thousand, nine hundred seventy-four".