23291330 has 8 divisors (see below), whose sum is σ = 41924412. Its totient is φ = 9316528.

The previous prime is 23291299. The next prime is 23291339. The reversal of 23291330 is 3319232.

It can be written as a sum of positive squares in 2 ways, for example, as 21780889 + 1510441 = 4667^2 + 1229^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 23291296 and 23291305.

It is not an unprimeable number, because it can be changed into a prime (23291339) 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, 1164557 + ... + 1164576.

Almost surely, 2^23291330 is an apocalyptic number.

23291330 is a deficient number, since it is larger than the sum of its proper divisors (18633082).

23291330 is a wasteful number, since it uses less digits than its factorization.

23291330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2329140.

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 23291330 is about 4826.1091989303. The cubic root of 23291330 is about 285.5823937680.

The spelling of 23291330 in words is "twenty-three million, two hundred ninety-one thousand, three hundred thirty".