31326912 has 70 divisors (see below), whose sum is σ = 92878148. Its totient is φ = 10440576.

The previous prime is 31326899. The next prime is 31326917. The reversal of 31326912 is 21962313.

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

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (31326917) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2163 + ... + 8205.

Almost surely, 2^31326912 is an apocalyptic number.

31326912 is a gapful number since it is divisible by the number (32) 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 31326912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46439074).

31326912 is an abundant number, since it is smaller than the sum of its proper divisors (61551236).

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

31326912 is an equidigital number, since it uses as much as digits as its factorization.

31326912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6067 (or 6048 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

The square root of 31326912 is about 5597.0449346061. The cubic root of 31326912 is about 315.2384588939.

It can be divided in two parts, 313 and 26912, that added together give a square (27225 = 165²).

The spelling of 31326912 in words is "thirty-one million, three hundred twenty-six thousand, nine hundred twelve".