231432411 has 16 divisors (see below), whose sum is σ = 357492224. Its totient is φ = 130434624.

The previous prime is 231432401. The next prime is 231432419. The reversal of 231432411 is 114234132.

It is not a de Polignac number, because 231432411 - 2⁹ = 231431899 is a prime.

It is a super-2 number, since 2×231432411² = 107121921722545842, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231432419) 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, 73951 + ... + 77016.

It is an arithmetic number, because the mean of its divisors is an integer number (22343264).

Almost surely, 2^231432411 is an apocalyptic number.

231432411 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

231432411 is a deficient number, since it is larger than the sum of its proper divisors (126059813).

231432411 is a wasteful number, since it uses less digits than its factorization.

231432411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151050.

The product of its digits is 576, while the sum is 21.

The square root of 231432411 is about 15212.9027802060. The cubic root of 231432411 is about 613.9618601794.

Adding to 231432411 its reverse (114234132), we get a palindrome (345666543).

The spelling of 231432411 in words is "two hundred thirty-one million, four hundred thirty-two thousand, four hundred eleven".