231402023 has 4 divisors (see below), whose sum is σ = 231438720. Its totient is φ = 231365328.

The previous prime is 231402019. The next prime is 231402037. The reversal of 231402023 is 320204132.

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 231402023 - 2² = 231402019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231401992 and 231402010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231402013) 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, 6215 + ... + 22392.

It is an arithmetic number, because the mean of its divisors is an integer number (57859680).

Almost surely, 2^231402023 is an apocalyptic number.

231402023 is a deficient number, since it is larger than the sum of its proper divisors (36697).

231402023 is an equidigital number, since it uses as much as digits as its factorization.

231402023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36696.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 231402023 is about 15211.9039899679. The cubic root of 231402023 is about 613.9349871216.

Adding to 231402023 its reverse (320204132), we get a palindrome (551606155).

The spelling of 231402023 in words is "two hundred thirty-one million, four hundred two thousand, twenty-three".