231401757 has 16 divisors (see below), whose sum is σ = 312998400. Its totient is φ = 152050992.

The previous prime is 231401749. The next prime is 231401767. The reversal of 231401757 is 757104132.

It is not a de Polignac number, because 231401757 - 2³ = 231401749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231401767) 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, 68494 + ... + 71792.

It is an arithmetic number, because the mean of its divisors is an integer number (19562400).

Almost surely, 2^231401757 is an apocalyptic number.

It is an amenable number.

231401757 is a deficient number, since it is larger than the sum of its proper divisors (81596643).

231401757 is a wasteful number, since it uses less digits than its factorization.

231401757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3632.

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 231401757 is about 15211.8952468126. The cubic root of 231401757 is about 613.9347518792.

Adding to 231401757 its reverse (757104132), we get a palindrome (988505889).

The spelling of 231401757 in words is "two hundred thirty-one million, four hundred one thousand, seven hundred fifty-seven".