234331391 has 16 divisors (see below), whose sum is σ = 275457024. Its totient is φ = 195190944.

The previous prime is 234331369. The next prime is 234331403. The reversal of 234331391 is 193133432.

It is a happy number.

It is not a de Polignac number, because 234331391 - 2¹⁸ = 234069247 is a prime.

It is a super-2 number, since 2×234331391² = 109822401615989762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234331091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36746 + ... + 42648.

It is an arithmetic number, because the mean of its divisors is an integer number (17216064).

Almost surely, 2^234331391 is an apocalyptic number.

234331391 is a deficient number, since it is larger than the sum of its proper divisors (41125633).

234331391 is a wasteful number, since it uses less digits than its factorization.

234331391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6070.

The product of its digits is 5832, while the sum is 29.

The square root of 234331391 is about 15307.8865621613. The cubic root of 234331391 is about 616.5147765512.

The spelling of 234331391 in words is "two hundred thirty-four million, three hundred thirty-one thousand, three hundred ninety-one".