193440131 has 2 divisors, whose sum is σ = 193440132. Its totient is φ = 193440130.

The previous prime is 193440047. The next prime is 193440151. The reversal of 193440131 is 131044391.

193440131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 193440131 - 2²² = 189245827 is a prime.

It is a super-2 number, since 2×193440131² = 74838168562594322, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 193440131.

It is not a weakly prime, because it can be changed into another prime (193440151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96720065 + 96720066.

It is an arithmetic number, because the mean of its divisors is an integer number (96720066).

Almost surely, 2^193440131 is an apocalyptic number.

193440131 is a deficient number, since it is larger than the sum of its proper divisors (1).

193440131 is an equidigital number, since it uses as much as digits as its factorization.

193440131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 193440131 is about 13908.2756299981. The cubic root of 193440131 is about 578.3386175707.

The spelling of 193440131 in words is "one hundred ninety-three million, four hundred forty thousand, one hundred thirty-one".