231401755 has 8 divisors (see below), whose sum is σ = 299042352. Its totient is φ = 170881248.

The previous prime is 231401749. The next prime is 231401767. The reversal of 231401755 is 557104132.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231401755 - 2¹⁵ = 231368987 is a prime.

It is a Duffinian 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, 1779949 + ... + 1780078.

It is an arithmetic number, because the mean of its divisors is an integer number (37380294).

Almost surely, 2^231401755 is an apocalyptic number.

231401755 is a deficient number, since it is larger than the sum of its proper divisors (67640597).

231401755 is a wasteful number, since it uses less digits than its factorization.

231401755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3560045.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 231401755 is about 15211.8951810746. The cubic root of 231401755 is about 613.9347501104.

Adding to 231401755 its reverse (557104132), we get a palindrome (788505887).

The spelling of 231401755 in words is "two hundred thirty-one million, four hundred one thousand, seven hundred fifty-five".