33400131 has 4 divisors (see below), whose sum is σ = 44533512. Its totient is φ = 22266752.

The previous prime is 33400093. The next prime is 33400139. The reversal of 33400131 is 13100433.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13100433 = 3 ⋅4366811.

It is a cyclic number.

It is not a de Polignac number, because 33400131 - 2⁶ = 33400067 is a prime.

It is a super-2 number, since 2×33400131² = 2231137501634322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33400131.

It is not an unprimeable number, because it can be changed into a prime (33400139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5566686 + ... + 5566691.

It is an arithmetic number, because the mean of its divisors is an integer number (11133378).

Almost surely, 2^33400131 is an apocalyptic number.

33400131 is a deficient number, since it is larger than the sum of its proper divisors (11133381).

33400131 is a wasteful number, since it uses less digits than its factorization.

33400131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11133380.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 33400131 is about 5779.2846443137. The cubic root of 33400131 is about 322.0446262237.

Adding to 33400131 its reverse (13100433), we get a palindrome (46500564).

The spelling of 33400131 in words is "thirty-three million, four hundred thousand, one hundred thirty-one".