231132031 has 8 divisors (see below), whose sum is σ = 249457824. Its totient is φ = 212884320.

The previous prime is 231132029. The next prime is 231132049. The reversal of 231132031 is 130231132.

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

It is a cyclic number.

It is not a de Polignac number, because 231132031 - 2¹ = 231132029 is a prime.

It is a super-2 number, since 2×231132031² = 106844031508369922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231131996 and 231132014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231132431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13291 + ... + 25276.

It is an arithmetic number, because the mean of its divisors is an integer number (31182228).

Almost surely, 2^231132031 is an apocalyptic number.

231132031 is a deficient number, since it is larger than the sum of its proper divisors (18325793).

231132031 is a wasteful number, since it uses less digits than its factorization.

231132031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39041.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 231132031 is about 15203.0270341140. The cubic root of 231132031 is about 613.6961213856.

Adding to 231132031 its reverse (130231132), we get a palindrome (361363163).

The spelling of 231132031 in words is "two hundred thirty-one million, one hundred thirty-two thousand, thirty-one".