31425696 has 72 divisors (see below), whose sum is σ = 94086720. Its totient is φ = 9922176.

The previous prime is 31425683. The next prime is 31425727. The reversal of 31425696 is 69652413.

It is a happy number.

31425696 is a `hidden beast` number, since 314 + 256 + 96 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 31425696.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2601 + ... + 8343.

It is an arithmetic number, because the mean of its divisors is an integer number (1306760).

Almost surely, 2^31425696 is an apocalyptic number.

31425696 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31425696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47043360).

31425696 is an abundant number, since it is smaller than the sum of its proper divisors (62661024).

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

31425696 is a wasteful number, since it uses less digits than its factorization.

31425696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5778 (or 5767 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 31425696 is about 5605.8626454811. The cubic root of 31425696 is about 315.5694612077.

The spelling of 31425696 in words is "thirty-one million, four hundred twenty-five thousand, six hundred ninety-six".