231545401042535 has 32 divisors (see below), whose sum is σ = 282179915592192. Its totient is φ = 182360416613760.

The previous prime is 231545401042507. The next prime is 231545401042541. The reversal of 231545401042535 is 535240104545132.

It is a happy number.

It is not a de Polignac number, because 231545401042535 - 2²² = 231545396848231 is a prime.

It is a super-2 number, since 2×231545401042535² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1512234452 + ... + 1512387558.

It is an arithmetic number, because the mean of its divisors is an integer number (8818122362256).

Almost surely, 2^{231545401042535} is an apocalyptic number.

231545401042535 is a deficient number, since it is larger than the sum of its proper divisors (50634514549657).

231545401042535 is a wasteful number, since it uses less digits than its factorization.

231545401042535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159383.

The product of its (nonzero) digits is 1440000, while the sum is 44.

Adding to 231545401042535 its reverse (535240104545132), we get a palindrome (766785505587667).

The spelling of 231545401042535 in words is "two hundred thirty-one trillion, five hundred forty-five billion, four hundred one million, forty-two thousand, five hundred thirty-five".