231432201031 has 4 divisors (see below), whose sum is σ = 233723609064. Its totient is φ = 229140793000.

The previous prime is 231432201029. The next prime is 231432201037. The reversal of 231432201031 is 130102234132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 231432201031 - 2¹ = 231432201029 is a prime.

It is a super-2 number, since 2×231432201031² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231432200993 and 231432201011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231432201037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1145703865 + ... + 1145704066.

It is an arithmetic number, because the mean of its divisors is an integer number (58430902266).

Almost surely, 2^231432201031 is an apocalyptic number.

231432201031 is a deficient number, since it is larger than the sum of its proper divisors (2291408033).

231432201031 is a wasteful number, since it uses less digits than its factorization.

231432201031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2291408032.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 231432201031 its reverse (130102234132), we get a palindrome (361534435163).

The spelling of 231432201031 in words is "two hundred thirty-one billion, four hundred thirty-two million, two hundred one thousand, thirty-one".