231401357 has 16 divisors (see below), whose sum is σ = 257064192. Its totient is φ = 206545920.

The previous prime is 231401341. The next prime is 231401369. The reversal of 231401357 is 753104132.

It is a cyclic number.

It is not a de Polignac number, because 231401357 - 2⁴ = 231401341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231407357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145388 + ... + 146970.

It is an arithmetic number, because the mean of its divisors is an integer number (16066512).

Almost surely, 2^231401357 is an apocalyptic number.

It is an amenable number.

231401357 is a deficient number, since it is larger than the sum of its proper divisors (25662835).

231401357 is a wasteful number, since it uses less digits than its factorization.

231401357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1828.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 231401357 is about 15211.8820992013. The cubic root of 231401357 is about 613.9343981307.

Adding to 231401357 its reverse (753104132), we get a palindrome (984505489).

The spelling of 231401357 in words is "two hundred thirty-one million, four hundred one thousand, three hundred fifty-seven".