133021232331 has 16 divisors (see below), whose sum is σ = 191175907104. Its totient is φ = 81785908224.

The previous prime is 133021232303. The next prime is 133021232347. The reversal of 133021232331 is 133232120331.

It is not a de Polignac number, because 133021232331 - 2⁵ = 133021232299 is a prime.

It is a super-2 number, since 2×133021232331² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (133021232431) 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, 1483206 + ... + 1570331.

It is an arithmetic number, because the mean of its divisors is an integer number (11948494194).

Almost surely, 2^133021232331 is an apocalyptic number.

133021232331 is a deficient number, since it is larger than the sum of its proper divisors (58154674773).

133021232331 is a wasteful number, since it uses less digits than its factorization.

133021232331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3054670.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 133021232331 its reverse (133232120331), we get a palindrome (266253352662).

The spelling of 133021232331 in words is "one hundred thirty-three billion, twenty-one million, two hundred thirty-two thousand, three hundred thirty-one".