993430404131 has 4 divisors (see below), whose sum is σ = 1083742259064. Its totient is φ = 903118549200.

The previous prime is 993430404119. The next prime is 993430404173. The reversal of 993430404131 is 131404034399.

It is a happy number.

993430404131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 993430404131 - 2⁶ = 993430404067 is a prime.

It is a super-2 number, since 2×993430404131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (993430404101) 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, 45155927450 + ... + 45155927471.

It is an arithmetic number, because the mean of its divisors is an integer number (270935564766).

Almost surely, 2^993430404131 is an apocalyptic number.

993430404131 is a deficient number, since it is larger than the sum of its proper divisors (90311854933).

993430404131 is a wasteful number, since it uses less digits than its factorization.

993430404131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90311854932.

The product of its (nonzero) digits is 139968, while the sum is 41.

The spelling of 993430404131 in words is "nine hundred ninety-three billion, four hundred thirty million, four hundred four thousand, one hundred thirty-one".