133023403251 has 16 divisors (see below), whose sum is σ = 197458903200. Its totient is φ = 88508031264.

The previous prime is 133023403217. The next prime is 133023403277. The reversal of 133023403251 is 152304320331.

133023403251 is a `hidden beast` number, since 1 + 3 + 3 + 0 + 2 + 3 + 403 + 251 = 666.

It is not a de Polignac number, because 133023403251 - 2¹⁰ = 133023402227 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (133023423251) 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, 4825936 + ... + 4853421.

It is an arithmetic number, because the mean of its divisors is an integer number (12341181450).

Almost surely, 2^133023403251 is an apocalyptic number.

133023403251 is a deficient number, since it is larger than the sum of its proper divisors (64435499949).

133023403251 is an equidigital number, since it uses as much as digits as its factorization.

133023403251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9679875 (or 9679869 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

Adding to 133023403251 its reverse (152304320331), we get a palindrome (285327723582).

The spelling of 133023403251 in words is "one hundred thirty-three billion, twenty-three million, four hundred three thousand, two hundred fifty-one".