231431541 has 8 divisors (see below), whose sum is σ = 336627744. Its totient is φ = 140261520.

The previous prime is 231431531. The next prime is 231431579. The reversal of 231431541 is 145134132.

It is a happy number.

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

It is not a de Polignac number, because 231431541 - 2⁷ = 231431413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231431521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3506506 + ... + 3506571.

It is an arithmetic number, because the mean of its divisors is an integer number (42078468).

Almost surely, 2^231431541 is an apocalyptic number.

It is an amenable number.

231431541 is a deficient number, since it is larger than the sum of its proper divisors (105196203).

231431541 is a wasteful number, since it uses less digits than its factorization.

231431541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7013091.

The product of its digits is 1440, while the sum is 24.

The square root of 231431541 is about 15212.8741860307. The cubic root of 231431541 is about 613.9610908439.

Adding to 231431541 its reverse (145134132), we get a palindrome (376565673).

The spelling of 231431541 in words is "two hundred thirty-one million, four hundred thirty-one thousand, five hundred forty-one".