231611054 has 4 divisors (see below), whose sum is σ = 347416584. Its totient is φ = 115805526.

The previous prime is 231611047. The next prime is 231611059. The reversal of 231611054 is 450116132.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231611059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57902762 + ... + 57902765.

It is an arithmetic number, because the mean of its divisors is an integer number (86854146).

Almost surely, 2^231611054 is an apocalyptic number.

231611054 is a deficient number, since it is larger than the sum of its proper divisors (115805530).

231611054 is a wasteful number, since it uses less digits than its factorization.

231611054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115805529.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 231611054 is about 15218.7730780112. The cubic root of 231611054 is about 614.1197922217.

Adding to 231611054 its reverse (450116132), we get a palindrome (681727186).

The spelling of 231611054 in words is "two hundred thirty-one million, six hundred eleven thousand, fifty-four".