234392507881 has 9 divisors (see below), whose sum is σ = 272664614781. Its totient is φ = 200904959052.

The previous prime is 234392507873. The next prime is 234392507969. The reversal of 234392507881 is 188705293432.

It is a happy number.

The square root of 234392507881 is 484141.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 234392507881 - 2³ = 234392507873 is a prime.

It is a super-2 number, since 2×234392507881² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (234392507821) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3354406 + ... + 3423568.

It is an arithmetic number, because the mean of its divisors is an integer number (30296068309).

Almost surely, 2^234392507881 is an apocalyptic number.

234392507881 is the 484141-st square number.

234392507881 is the 242071-st centered octagonal number.

It is an amenable number.

234392507881 is a deficient number, since it is larger than the sum of its proper divisors (38272106900).

234392507881 is an frugal number, since it uses more digits than its factorization.

234392507881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138340 (or 69170 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 52.

The spelling of 234392507881 in words is "two hundred thirty-four billion, three hundred ninety-two million, five hundred seven thousand, eight hundred eighty-one".