31342734 has 32 divisors (see below), whose sum is σ = 70698240. Its totient is φ = 10290456.

The previous prime is 31342733. The next prime is 31342739. The reversal of 31342734 is 43724313.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 31342698 and 31342707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31342733) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 714 + ... + 7949.

It is an arithmetic number, because the mean of its divisors is an integer number (2209320).

Almost surely, 2^31342734 is an apocalyptic number.

31342734 is an abundant number, since it is smaller than the sum of its proper divisors (39355506).

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

31342734 is a wasteful number, since it uses less digits than its factorization.

31342734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8741 (or 8735 counting only the distinct ones).

The product of its digits is 6048, while the sum is 27.

The square root of 31342734 is about 5598.4581806065. The cubic root of 31342734 is about 315.2915215070.

The spelling of 31342734 in words is "thirty-one million, three hundred forty-two thousand, seven hundred thirty-four".