231275541 has 12 divisors (see below), whose sum is σ = 358713312. Its totient is φ = 132157368.

The previous prime is 231275537. The next prime is 231275549. The reversal of 231275541 is 145572132.

It is not a de Polignac number, because 231275541 - 2² = 231275537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231275499 and 231275508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231275549) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 786505 + ... + 786798.

It is an arithmetic number, because the mean of its divisors is an integer number (29892776).

Almost surely, 2^231275541 is an apocalyptic number.

231275541 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

231275541 is a deficient number, since it is larger than the sum of its proper divisors (127437771).

231275541 is a wasteful number, since it uses less digits than its factorization.

231275541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1573320 (or 1573313 counting only the distinct ones).

The product of its digits is 8400, while the sum is 30.

The square root of 231275541 is about 15207.7460854658. The cubic root of 231275541 is about 613.8231098554.

The spelling of 231275541 in words is "two hundred thirty-one million, two hundred seventy-five thousand, five hundred forty-one".