133321377 has 16 divisors (see below), whose sum is σ = 205441920. Its totient is φ = 75326592.

The previous prime is 133321367. The next prime is 133321379. The reversal of 133321377 is 773123331.

It is not a de Polignac number, because 133321377 - 2¹⁴ = 133304993 is a prime.

It is a super-2 number, since 2×133321377² = 35549179130352258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (133321379) 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, 33798 + ... + 37535.

It is an arithmetic number, because the mean of its divisors is an integer number (12840120).

Almost surely, 2^133321377 is an apocalyptic number.

It is an amenable number.

133321377 is a deficient number, since it is larger than the sum of its proper divisors (72120543).

133321377 is an equidigital number, since it uses as much as digits as its factorization.

133321377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71432.

The product of its digits is 7938, while the sum is 30.

The square root of 133321377 is about 11546.4876477654. The cubic root of 133321377 is about 510.8576840542.

The spelling of 133321377 in words is "one hundred thirty-three million, three hundred twenty-one thousand, three hundred seventy-seven".