133031432431 has 8 divisors (see below), whose sum is σ = 136056840480. Its totient is φ = 130025112672.

The previous prime is 133031432411. The next prime is 133031432447. The reversal of 133031432431 is 134234130331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133031432431 - 2⁹ = 133031431919 is a prime.

It is a super-2 number, since 2×133031432431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133031432431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133031432411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4757976 + ... + 4785853.

It is an arithmetic number, because the mean of its divisors is an integer number (17007105060).

Almost surely, 2^133031432431 is an apocalyptic number.

133031432431 is a deficient number, since it is larger than the sum of its proper divisors (3025408049).

133031432431 is an equidigital number, since it uses as much as digits as its factorization.

133031432431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9544145.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 133031432431 its reverse (134234130331), we get a palindrome (267265562762).

The spelling of 133031432431 in words is "one hundred thirty-three billion, thirty-one million, four hundred thirty-two thousand, four hundred thirty-one".