133311013 has 16 divisors (see below), whose sum is σ = 152217216. Its totient is φ = 115568640.

The previous prime is 133311007. The next prime is 133311019. The reversal of 133311013 is 310113331.

It is an interprime number because it is at equal distance from previous prime (133311007) and next prime (133311019).

It is not a de Polignac number, because 133311013 - 2¹⁷ = 133179941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133311019) 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, 115045 + ... + 116197.

It is an arithmetic number, because the mean of its divisors is an integer number (9513576).

Almost surely, 2^133311013 is an apocalyptic number.

It is an amenable number.

133311013 is a deficient number, since it is larger than the sum of its proper divisors (18906203).

133311013 is a wasteful number, since it uses less digits than its factorization.

133311013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1644.

The product of its (nonzero) digits is 81, while the sum is 16.

The square root of 133311013 is about 11546.0388445562. The cubic root of 133311013 is about 510.8444462016.

Adding to 133311013 its reverse (310113331), we get a palindrome (443424344).

The spelling of 133311013 in words is "one hundred thirty-three million, three hundred eleven thousand, thirteen".