133231030400 has 96 divisors (see below), whose sum is σ = 354439488900. Its totient is φ = 49192980480.

The previous prime is 133231030391. The next prime is 133231030403. The reversal of 133231030400 is 4030132331.

It can be written as a sum of positive squares in 6 ways, for example, as 11954360896 + 121276669504 = 109336^2 + 348248^2 .

It is a super-2 number, since 2×133231030400² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (133231030403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1559735 + ... + 1642934.

Almost surely, 2^133231030400 is an apocalyptic number.

133231030400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133231030400 is an abundant number, since it is smaller than the sum of its proper divisors (221208458500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133231030400 is a wasteful number, since it uses less digits than its factorization.

133231030400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3202706 (or 3202689 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 133231030400 its reverse (4030132331), we get a palindrome (137261162731).

The spelling of 133231030400 in words is "one hundred thirty-three billion, two hundred thirty-one million, thirty thousand, four hundred".