231403078 has 4 divisors (see below), whose sum is σ = 347104620. Its totient is φ = 115701538.

The previous prime is 231403063. The next prime is 231403079. The reversal of 231403078 is 870304132.

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 (231403079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57850768 + ... + 57850771.

It is an arithmetic number, because the mean of its divisors is an integer number (86776155).

Almost surely, 2^231403078 is an apocalyptic number.

231403078 is a deficient number, since it is larger than the sum of its proper divisors (115701542).

231403078 is a wasteful number, since it uses less digits than its factorization.

231403078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115701541.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 231403078 is about 15211.9386667183. The cubic root of 231403078 is about 613.9359201305.

The spelling of 231403078 in words is "two hundred thirty-one million, four hundred three thousand, seventy-eight".