133111973 has 2 divisors, whose sum is σ = 133111974. Its totient is φ = 133111972.

The previous prime is 133111969. The next prime is 133112003. The reversal of 133111973 is 379111331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133102369 + 9604 = 11537^2 + 98^2 .

It is a cyclic number.

It is not a de Polignac number, because 133111973 - 2² = 133111969 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133111933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66555986 + 66555987.

It is an arithmetic number, because the mean of its divisors is an integer number (66555987).

Almost surely, 2^133111973 is an apocalyptic number.

It is an amenable number.

133111973 is a deficient number, since it is larger than the sum of its proper divisors (1).

133111973 is an equidigital number, since it uses as much as digits as its factorization.

133111973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1701, while the sum is 29.

The square root of 133111973 is about 11537.4162185474. The cubic root of 133111973 is about 510.5900808095.

The spelling of 133111973 in words is "one hundred thirty-three million, one hundred eleven thousand, nine hundred seventy-three".