133420115431 has 4 divisors (see below), whose sum is σ = 133421230152. Its totient is φ = 133419000712.

The previous prime is 133420115429. The next prime is 133420115461. The reversal of 133420115431 is 134511024331.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 133420115431 - 2¹ = 133420115429 is a prime.

It is a super-2 number, since 2×133420115431² (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 133420115431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133420115401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 352801 + ... + 625546.

It is an arithmetic number, because the mean of its divisors is an integer number (33355307538).

Almost surely, 2^133420115431 is an apocalyptic number.

133420115431 is a deficient number, since it is larger than the sum of its proper divisors (1114721).

133420115431 is an equidigital number, since it uses as much as digits as its factorization.

133420115431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1114720.

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 133420115431 its reverse (134511024331), we get a palindrome (267931139762).

The spelling of 133420115431 in words is "one hundred thirty-three billion, four hundred twenty million, one hundred fifteen thousand, four hundred thirty-one".