133661230 has 32 divisors (see below), whose sum is σ = 251149248. Its totient is φ = 51168000.

The previous prime is 133661201. The next prime is 133661237. The reversal of 133661230 is 32166331.

133661230 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×133661230² = 35730648810225800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 133661195 and 133661204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133661237) 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, 18655 + ... + 24805.

It is an arithmetic number, because the mean of its divisors is an integer number (7848414).

Almost surely, 2^133661230 is an apocalyptic number.

133661230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133661230 is a deficient number, since it is larger than the sum of its proper divisors (117488018).

133661230 is a wasteful number, since it uses less digits than its factorization.

133661230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6252.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 133661230 is about 11561.1950074376. The cubic root of 133661230 is about 511.2913959502.

The spelling of 133661230 in words is "one hundred thirty-three million, six hundred sixty-one thousand, two hundred thirty".