231545035541 has 4 divisors (see below), whose sum is σ = 232565057952. Its totient is φ = 230525013132.

The previous prime is 231545035507. The next prime is 231545035549. The reversal of 231545035541 is 145530545132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 231545035541 - 2²² = 231540841237 is a prime.

It is a super-2 number, since 2×231545035541² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231545035495 and 231545035504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231545035549) 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, 510010865 + ... + 510011318.

It is an arithmetic number, because the mean of its divisors is an integer number (58141264488).

Almost surely, 2^231545035541 is an apocalyptic number.

It is an amenable number.

231545035541 is a deficient number, since it is larger than the sum of its proper divisors (1020022411).

231545035541 is a wasteful number, since it uses less digits than its factorization.

231545035541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020022410.

The product of its (nonzero) digits is 180000, while the sum is 38.

The spelling of 231545035541 in words is "two hundred thirty-one billion, five hundred forty-five million, thirty-five thousand, five hundred forty-one".