231651466 has 4 divisors (see below), whose sum is σ = 347477202. Its totient is φ = 115825732.

The previous prime is 231651451. The next prime is 231651493. The reversal of 231651466 is 664156132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 155525841 + 76125625 = 12471^2 + 8725^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57912865 + ... + 57912868.

Almost surely, 2^231651466 is an apocalyptic number.

231651466 is a deficient number, since it is larger than the sum of its proper divisors (115825736).

231651466 is a wasteful number, since it uses less digits than its factorization.

231651466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115825735.

The product of its digits is 25920, while the sum is 34.

The square root of 231651466 is about 15220.1007224000. The cubic root of 231651466 is about 614.1555077965.

The spelling of 231651466 in words is "two hundred thirty-one million, six hundred fifty-one thousand, four hundred sixty-six".