231065390 has 16 divisors (see below), whose sum is σ = 418076208. Its totient is φ = 91946496.

The previous prime is 231065369. The next prime is 231065431. The reversal of 231065390 is 93560132.

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, 57932 + ... + 61791.

It is an arithmetic number, because the mean of its divisors is an integer number (26129763).

Almost surely, 2^231065390 is an apocalyptic number.

231065390 is a deficient number, since it is larger than the sum of its proper divisors (187010818).

231065390 is a wasteful number, since it uses less digits than its factorization.

231065390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119923.

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 231065390 is about 15200.8351744238. The cubic root of 231065390 is about 613.6371345312.

The spelling of 231065390 in words is "two hundred thirty-one million, sixty-five thousand, three hundred ninety".