133044231 has 16 divisors (see below), whose sum is σ = 180442080. Its totient is φ = 87183360.

The previous prime is 133044217. The next prime is 133044239. The reversal of 133044231 is 132440331.

It is not a de Polignac number, because 133044231 - 2¹¹ = 133042183 is a prime.

It is a super-2 number, since 2×133044231² = 35401534804762722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 133044198 and 133044207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133044239) 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, 46951 + ... + 49703.

It is an arithmetic number, because the mean of its divisors is an integer number (11277630).

Almost surely, 2^133044231 is an apocalyptic number.

133044231 is a deficient number, since it is larger than the sum of its proper divisors (47397849).

133044231 is a wasteful number, since it uses less digits than its factorization.

133044231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3026.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 133044231 is about 11534.4800923145. The cubic root of 133044231 is about 510.5034513311.

Adding to 133044231 its reverse (132440331), we get a palindrome (265484562).

The spelling of 133044231 in words is "one hundred thirty-three million, forty-four thousand, two hundred thirty-one".