233220731 has 8 divisors (see below), whose sum is σ = 241766640. Its totient is φ = 224792928.

The previous prime is 233220707. The next prime is 233220749. The reversal of 233220731 is 137022332.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 233220731 - 2¹⁸ = 232958587 is a prime.

It is a super-2 number, since 2×233220731² = 108783818736348722, 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 = 233220697 and 233220706.

It is not an unprimeable number, because it can be changed into a prime (233220431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25496 + ... + 33413.

It is an arithmetic number, because the mean of its divisors is an integer number (30220830).

Almost surely, 2^233220731 is an apocalyptic number.

233220731 is a deficient number, since it is larger than the sum of its proper divisors (8545909).

233220731 is a wasteful number, since it uses less digits than its factorization.

233220731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59053.

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 233220731 is about 15271.5660951980. The cubic root of 233220731 is about 615.5392023526.

The spelling of 233220731 in words is "two hundred thirty-three million, two hundred twenty thousand, seven hundred thirty-one".