97631238 has 16 divisors (see below), whose sum is σ = 206748720. Its totient is φ = 30629376.

The previous prime is 97631213. The next prime is 97631239. The reversal of 97631238 is 83213679.

It is a junction number, because it is equal to n+sod(n) for n = 97631196 and 97631205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97631239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 478483 + ... + 478686.

It is an arithmetic number, because the mean of its divisors is an integer number (12921795).

Almost surely, 2^97631238 is an apocalyptic number.

97631238 is an abundant number, since it is smaller than the sum of its proper divisors (109117482).

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

97631238 is a wasteful number, since it uses less digits than its factorization.

97631238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957191.

The product of its digits is 54432, while the sum is 39.

The square root of 97631238 is about 9880.8520887624. The cubic root of 97631238 is about 460.4646187748.

The spelling of 97631238 in words is "ninety-seven million, six hundred thirty-one thousand, two hundred thirty-eight".