133533031400 has 48 divisors (see below), whose sum is σ = 328726912140. Its totient is φ = 50271257600.

The previous prime is 133533031399. The next prime is 133533031403. The reversal of 133533031400 is 4130335331.

It can be written as a sum of positive squares in 6 ways, for example, as 87470428516 + 46062602884 = 295754^2 + 214622^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 133533031400.

It is not an unprimeable number, because it can be changed into a prime (133533031403) 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, 19633811 + ... + 19640610.

Almost surely, 2^133533031400 is an apocalyptic number.

133533031400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133533031400 is an abundant number, since it is smaller than the sum of its proper divisors (195193880740).

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

133533031400 is a wasteful number, since it uses less digits than its factorization.

133533031400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39274454 (or 39274445 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 26.

Adding to 133533031400 its reverse (4130335331), we get a palindrome (137663366731).

The spelling of 133533031400 in words is "one hundred thirty-three billion, five hundred thirty-three million, thirty-one thousand, four hundred".