231697692 has 96 divisors (see below), whose sum is σ = 643083840. Its totient is φ = 71884800.

The previous prime is 231697667. The next prime is 231697721. The reversal of 231697692 is 296796132.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 177442 + ... + 178742.

It is an arithmetic number, because the mean of its divisors is an integer number (6698790).

Almost surely, 2^231697692 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 231697692, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321541920).

231697692 is an abundant number, since it is smaller than the sum of its proper divisors (411386148).

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

231697692 is a wasteful number, since it uses less digits than its factorization.

231697692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428 (or 1420 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 231697692 is about 15221.6192305549. The cubic root of 231697692 is about 614.1963566125.

The spelling of 231697692 in words is "two hundred thirty-one million, six hundred ninety-seven thousand, six hundred ninety-two".