133163131 has 6 divisors (see below), whose sum is σ = 136333860. Its totient is φ = 130064508.

The previous prime is 133163119. The next prime is 133163143. The reversal of 133163131 is 131361331.

It is an interprime number because it is at equal distance from previous prime (133163119) and next prime (133163143).

It is not a de Polignac number, because 133163131 - 2⁷ = 133163003 is a prime.

It is a super-2 number, since 2×133163131² = 35464838915446322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133163101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34161 + ... + 37858.

It is an arithmetic number, because the mean of its divisors is an integer number (22722310).

Almost surely, 2^133163131 is an apocalyptic number.

133163131 is a deficient number, since it is larger than the sum of its proper divisors (3170729).

133163131 is an frugal number, since it uses more digits than its factorization.

133163131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72105 (or 72062 counting only the distinct ones).

The product of its digits is 486, while the sum is 22.

The square root of 133163131 is about 11539.6330530914. The cubic root of 133163131 is about 510.6554829448.

The spelling of 133163131 in words is "one hundred thirty-three million, one hundred sixty-three thousand, one hundred thirty-one".