231355426 has 4 divisors (see below), whose sum is σ = 347033142. Its totient is φ = 115677712.

The previous prime is 231355403. The next prime is 231355427. The reversal of 231355426 is 624553132.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 229492201 + 1863225 = 15149^2 + 1365^2 .

It is not an unprimeable number, because it can be changed into a prime (231355427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57838855 + ... + 57838858.

Almost surely, 2^231355426 is an apocalyptic number.

231355426 is a deficient number, since it is larger than the sum of its proper divisors (115677716).

231355426 is a wasteful number, since it uses less digits than its factorization.

231355426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115677715.

The product of its digits is 21600, while the sum is 31.

The square root of 231355426 is about 15210.3723162847. The cubic root of 231355426 is about 613.8937753687.

It can be divided in two parts, 23135 and 5426, that added together give a 4-th power (28561 = 13⁴).

The spelling of 231355426 in words is "two hundred thirty-one million, three hundred fifty-five thousand, four hundred twenty-six".