232116621 has 32 divisors (see below), whose sum is σ = 360944640. Its totient is φ = 131260800.

The previous prime is 232116617. The next prime is 232116641. The reversal of 232116621 is 126611232.

It is not a de Polignac number, because 232116621 - 2² = 232116617 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 232116591 and 232116600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232116601) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27390 + ... + 34848.

It is an arithmetic number, because the mean of its divisors is an integer number (11279520).

Almost surely, 2^232116621 is an apocalyptic number.

It is an amenable number.

232116621 is a deficient number, since it is larger than the sum of its proper divisors (128828019).

232116621 is a wasteful number, since it uses less digits than its factorization.

232116621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7537.

The product of its digits is 864, while the sum is 24.

The square root of 232116621 is about 15235.3740026295. The cubic root of 232116621 is about 614.5663067008.

Adding to 232116621 its reverse (126611232), we get a palindrome (358727853).

It can be divided in two parts, 232116 and 621, that multiplied together give a square (144144036 = 12006²).

The spelling of 232116621 in words is "two hundred thirty-two million, one hundred sixteen thousand, six hundred twenty-one".