231122000 has 40 divisors (see below), whose sum is σ = 558857832. Its totient is φ = 92448000.

The previous prime is 231121973. The next prime is 231122027. The reversal of 231122000 is 221132.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (231121973) and next prime (231122027).

It can be written as a sum of positive squares in 4 ways, for example, as 57093136 + 174028864 = 7556^2 + 13192^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55781 + ... + 59780.

Almost surely, 2^231122000 is an apocalyptic number.

231122000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231122000 is an abundant number, since it is smaller than the sum of its proper divisors (327735832).

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

231122000 is a wasteful number, since it uses less digits than its factorization.

231122000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115584 (or 115568 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 231122000 is about 15202.6971291281. The cubic root of 231122000 is about 613.6872432352.

Adding to 231122000 its reverse (221132), we get a palindrome (231343132).

The spelling of 231122000 in words is "two hundred thirty-one million, one hundred twenty-two thousand".