133043931 has 16 divisors (see below), whose sum is σ = 197824800. Its totient is φ = 88370784.

The previous prime is 133043929. The next prime is 133043951. The reversal of 133043931 is 139340331.

It is not a de Polignac number, because 133043931 - 2¹ = 133043929 is a prime.

It is a super-2 number, since 2×133043931² = 35401375151865522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 133043895 and 133043904.

It is not an unprimeable number, because it can be changed into a prime (133043951) 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, 1416 + ... + 16373.

It is an arithmetic number, because the mean of its divisors is an integer number (12364050).

Almost surely, 2^133043931 is an apocalyptic number.

133043931 is a deficient number, since it is larger than the sum of its proper divisors (64780869).

133043931 is a wasteful number, since it uses less digits than its factorization.

133043931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18075 (or 18069 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 27.

The square root of 133043931 is about 11534.4670878199. The cubic root of 133043931 is about 510.5030676212.

The spelling of 133043931 in words is "one hundred thirty-three million, forty-three thousand, nine hundred thirty-one".