231545432352403 has 16 divisors (see below), whose sum is σ = 253606707809280. Its totient is φ = 210104632067616.

The previous prime is 231545432352391. The next prime is 231545432352419. The reversal of 231545432352403 is 304253234545132.

It is not a de Polignac number, because 231545432352403 - 2²⁵ = 231545398797971 is a prime.

It is a super-2 number, since 2×231545432352403² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231545432352803) 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, 277076125 + ... + 277910542.

It is an arithmetic number, because the mean of its divisors is an integer number (15850419238080).

Almost surely, 2^{231545432352403} is an apocalyptic number.

231545432352403 is a deficient number, since it is larger than the sum of its proper divisors (22061275456877).

231545432352403 is a wasteful number, since it uses less digits than its factorization.

231545432352403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554987226.

The product of its (nonzero) digits is 5184000, while the sum is 46.

Adding to 231545432352403 its reverse (304253234545132), we get a palindrome (535798666897535).

The spelling of 231545432352403 in words is "two hundred thirty-one trillion, five hundred forty-five billion, four hundred thirty-two million, three hundred fifty-two thousand, four hundred three".