133331431233 has 48 divisors (see below), whose sum is σ = 242953615296. Its totient is φ = 63935141760.

The previous prime is 133331431133. The next prime is 133331431279. The reversal of 133331431233 is 332134133331.

It is a happy number.

It is not a de Polignac number, because 133331431233 - 2¹⁴ = 133331414849 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133331431233.

It is not an unprimeable number, because it can be changed into a prime (133331431033) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3150366 + ... + 3192407.

It is an arithmetic number, because the mean of its divisors is an integer number (5061533652).

Almost surely, 2^133331431233 is an apocalyptic number.

133331431233 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

133331431233 is a deficient number, since it is larger than the sum of its proper divisors (109622184063).

133331431233 is a wasteful number, since it uses less digits than its factorization.

133331431233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6342814 (or 6342807 counting only the distinct ones).

The product of its digits is 17496, while the sum is 30.

Adding to 133331431233 its reverse (332134133331), we get a palindrome (465465564564).

The spelling of 133331431233 in words is "one hundred thirty-three billion, three hundred thirty-one million, four hundred thirty-one thousand, two hundred thirty-three".