233648331 has 16 divisors (see below), whose sum is σ = 368313600. Its totient is φ = 128909088.

The previous prime is 233648321. The next prime is 233648347. The reversal of 233648331 is 133846332.

It is not a de Polignac number, because 233648331 - 2¹⁰ = 233647307 is a prime.

It is a super-2 number, since 2×233648331² = 109183085158171122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 233648292 and 233648301.

It is not an unprimeable number, because it can be changed into a prime (233648321) 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, 191221 + ... + 192438.

It is an arithmetic number, because the mean of its divisors is an integer number (23019600).

Almost surely, 2^233648331 is an apocalyptic number.

233648331 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

233648331 is a deficient number, since it is larger than the sum of its proper divisors (134665269).

233648331 is a wasteful number, since it uses less digits than its factorization.

233648331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383698.

The product of its digits is 31104, while the sum is 33.

The square root of 233648331 is about 15285.5595579619. The cubic root of 233648331 is about 615.9151607382.

The spelling of 233648331 in words is "two hundred thirty-three million, six hundred forty-eight thousand, three hundred thirty-one".