97312212 has 48 divisors (see below), whose sum is σ = 255767680. Its totient is φ = 31990464.

The previous prime is 97312177. The next prime is 97312261. The reversal of 97312212 is 21221379.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1713 + ... + 14055.

Almost surely, 2^97312212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97312212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127883840).

97312212 is an abundant number, since it is smaller than the sum of its proper divisors (158455468).

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

97312212 is a wasteful number, since it uses less digits than its factorization.

97312212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12429 (or 12421 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 97312212 is about 9864.6952309739. The cubic root of 97312212 is about 459.9625237270.

The spelling of 97312212 in words is "ninety-seven million, three hundred twelve thousand, two hundred twelve".