931997000 has 128 divisors (see below), whose sum is σ = 2396908800. Its totient is φ = 336384000.

The previous prime is 931996969. The next prime is 931997021. The reversal of 931997000 is 799139.

It is a happy number.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2122781 + ... + 2123219.

It is an arithmetic number, because the mean of its divisors is an integer number (18725850).

Almost surely, 2^931997000 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 931997000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1198454400).

931997000 is an abundant number, since it is smaller than the sum of its proper divisors (1464911800).

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

931997000 is a wasteful number, since it uses less digits than its factorization.

931997000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664 (or 650 counting only the distinct ones).

The product of its (nonzero) digits is 15309, while the sum is 38.

The square root of 931997000 is about 30528.6259107743. The cubic root of 931997000 is about 976.7981718785.

The spelling of 931997000 in words is "nine hundred thirty-one million, nine hundred ninety-seven thousand".