31426608 has 80 divisors (see below), whose sum is σ = 90529920. Its totient is φ = 9335808.

The previous prime is 31426607. The next prime is 31426609. The reversal of 31426608 is 80662413.

It is an interprime number because it is at equal distance from previous prime (31426607) and next prime (31426609).

It is not an unprimeable number, because it can be changed into a prime (31426601) 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, 14491 + ... + 16517.

It is an arithmetic number, because the mean of its divisors is an integer number (1131624).

Almost surely, 2^31426608 is an apocalyptic number.

31426608 is a gapful number since it is divisible by the number (38) 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 31426608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45264960).

31426608 is an abundant number, since it is smaller than the sum of its proper divisors (59103312).

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

31426608 is a wasteful number, since it uses less digits than its factorization.

31426608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2074 (or 2068 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 31426608 is about 5605.9439883038. The cubic root of 31426608 is about 315.5725138748.

The spelling of 31426608 in words is "thirty-one million, four hundred twenty-six thousand, six hundred eight".