231400382 has 4 divisors (see below), whose sum is σ = 347100576. Its totient is φ = 115700190.

The previous prime is 231400381. The next prime is 231400391. The reversal of 231400382 is 283004132.

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

It is a super-2 number, since 2×231400382² = 107092273579491848, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231400381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57850094 + ... + 57850097.

It is an arithmetic number, because the mean of its divisors is an integer number (86775144).

Almost surely, 2^231400382 is an apocalyptic number.

231400382 is a deficient number, since it is larger than the sum of its proper divisors (115700194).

231400382 is a wasteful number, since it uses less digits than its factorization.

231400382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115700193.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 231400382 is about 15211.8500518510. The cubic root of 231400382 is about 613.9335358671.

The spelling of 231400382 in words is "two hundred thirty-one million, four hundred thousand, three hundred eighty-two".