97157312 has 56 divisors (see below), whose sum is σ = 233318304. Its totient is φ = 39186432.

The previous prime is 97157311. The next prime is 97157341. The reversal of 97157312 is 21375179.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-3 number, since 3×97157312³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (97157311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1238 + ... + 13994.

Almost surely, 2^97157312 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 97157312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116659152).

97157312 is an abundant number, since it is smaller than the sum of its proper divisors (136160992).

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

97157312 is a wasteful number, since it uses less digits than its factorization.

97157312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12793 (or 12783 counting only the distinct ones).

The product of its digits is 13230, while the sum is 35.

The square root of 97157312 is about 9856.8408732210. The cubic root of 97157312 is about 459.7183404916.

The spelling of 97157312 in words is "ninety-seven million, one hundred fifty-seven thousand, three hundred twelve".