234220031 has 4 divisors (see below), whose sum is σ = 234279864. Its totient is φ = 234160200.

The previous prime is 234220013. The next prime is 234220057. The reversal of 234220031 is 130022432.

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 234220031 - 2²² = 230025727 is a prime.

It is a super-2 number, since 2×234220031² = 109718045843281922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 234219991 and 234220009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234220061) 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, 23600 + ... + 32021.

It is an arithmetic number, because the mean of its divisors is an integer number (58569966).

Almost surely, 2^234220031 is an apocalyptic number.

234220031 is a deficient number, since it is larger than the sum of its proper divisors (59833).

234220031 is an equidigital number, since it uses as much as digits as its factorization.

234220031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59832.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 234220031 is about 15304.2487891435. The cubic root of 234220031 is about 616.4171001172.

Adding to 234220031 its reverse (130022432), we get a palindrome (364242463).

The spelling of 234220031 in words is "two hundred thirty-four million, two hundred twenty thousand, thirty-one".