231402995 has 32 divisors (see below), whose sum is σ = 307380480. Its totient is φ = 166561920.

The previous prime is 231402989. The next prime is 231403009. The reversal of 231402995 is 599204132.

It is not a de Polignac number, because 231402995 - 2¹² = 231398899 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 150380 + ... + 151910.

It is an arithmetic number, because the mean of its divisors is an integer number (9605640).

Almost surely, 2^231402995 is an apocalyptic number.

231402995 is a deficient number, since it is larger than the sum of its proper divisors (75977485).

231402995 is a wasteful number, since it uses less digits than its factorization.

231402995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1635.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 231402995 is about 15211.9359385977. The cubic root of 231402995 is about 613.9358467280.

The spelling of 231402995 in words is "two hundred thirty-one million, four hundred two thousand, nine hundred ninety-five".