231550406 has 4 divisors (see below), whose sum is σ = 347325612. Its totient is φ = 115775202.

The previous prime is 231550393. The next prime is 231550409. The reversal of 231550406 is 604055132.

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 (231550409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57887600 + ... + 57887603.

It is an arithmetic number, because the mean of its divisors is an integer number (86831403).

Almost surely, 2^231550406 is an apocalyptic number.

231550406 is a deficient number, since it is larger than the sum of its proper divisors (115775206).

231550406 is a wasteful number, since it uses less digits than its factorization.

231550406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115775205.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 231550406 is about 15216.7804084833. The cubic root of 231550406 is about 614.0661845493.

The spelling of 231550406 in words is "two hundred thirty-one million, five hundred fifty thousand, four hundred six".