231434331220023 has 16 divisors (see below), whose sum is σ = 315199496902656. Its totient is φ = 150980503085280.

The previous prime is 231434331220007. The next prime is 231434331220091. The reversal of 231434331220023 is 320022133434132.

It is not a de Polignac number, because 231434331220023 - 2⁴ = 231434331220007 is a prime.

It is a super-2 number, since 2×231434331220023² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231434331240023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142092748 + ... + 143712273.

It is an arithmetic number, because the mean of its divisors is an integer number (19699968556416).

Almost surely, 2^{231434331220023} is an apocalyptic number.

231434331220023 is a deficient number, since it is larger than the sum of its proper divisors (83765165682633).

231434331220023 is a wasteful number, since it uses less digits than its factorization.

231434331220023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285810814.

The product of its (nonzero) digits is 62208, while the sum is 33.

Adding to 231434331220023 its reverse (320022133434132), we get a palindrome (551456464654155).

The spelling of 231434331220023 in words is "two hundred thirty-one trillion, four hundred thirty-four billion, three hundred thirty-one million, two hundred twenty thousand, twenty-three".