231139470 has 32 divisors (see below), whose sum is σ = 555144480. Its totient is φ = 61591680.

The previous prime is 231139451. The next prime is 231139477. The reversal of 231139470 is 74931132.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231139477) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64896 + ... + 68364.

It is an arithmetic number, because the mean of its divisors is an integer number (17348265).

Almost surely, 2^231139470 is an apocalyptic number.

231139470 is an abundant number, since it is smaller than the sum of its proper divisors (324005010).

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

231139470 is a wasteful number, since it uses less digits than its factorization.

231139470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5700.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 231139470 is about 15203.2716873705. The cubic root of 231139470 is about 613.7027052654.

The spelling of 231139470 in words is "two hundred thirty-one million, one hundred thirty-nine thousand, four hundred seventy".