230402311 has 4 divisors (see below), whose sum is σ = 232683624. Its totient is φ = 228121000.

The previous prime is 230402279. The next prime is 230402357. The reversal of 230402311 is 113204032.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 230402311 - 2⁵ = 230402279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230402371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1140505 + ... + 1140706.

It is an arithmetic number, because the mean of its divisors is an integer number (58170906).

Almost surely, 2^230402311 is an apocalyptic number.

230402311 is a deficient number, since it is larger than the sum of its proper divisors (2281313).

230402311 is a wasteful number, since it uses less digits than its factorization.

230402311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2281312.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 230402311 is about 15179.0088938639. The cubic root of 230402311 is about 613.0495956083.

Adding to 230402311 its reverse (113204032), we get a palindrome (343606343).

The spelling of 230402311 in words is "two hundred thirty million, four hundred two thousand, three hundred eleven".