31400634 has 8 divisors (see below), whose sum is σ = 62801280. Its totient is φ = 10466876.

The previous prime is 31400627. The next prime is 31400641. The reversal of 31400634 is 43600413.

It is an interprime number because it is at equal distance from previous prime (31400627) and next prime (31400641).

It is a sphenic number, since it is the product of 3 distinct primes.

31400634 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 31400634.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2616714 + ... + 2616725.

It is an arithmetic number, because the mean of its divisors is an integer number (7850160).

Almost surely, 2^31400634 is an apocalyptic number.

31400634 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

31400634 is a wasteful number, since it uses less digits than its factorization.

31400634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5233444.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 31400634 is about 5603.6268612391. The cubic root of 31400634 is about 315.4855499907.

The spelling of 31400634 in words is "thirty-one million, four hundred thousand, six hundred thirty-four".