1161407431 has 2 divisors, whose sum is σ = 1161407432. Its totient is φ = 1161407430.

The previous prime is 1161407381. The next prime is 1161407441. The reversal of 1161407431 is 1347041611.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1161407431 - 2¹⁵ = 1161374663 is a prime.

It is a super-2 number, since 2×1161407431² = 2697734441564039522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1161407431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1161407441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 580703715 + 580703716.

It is an arithmetic number, because the mean of its divisors is an integer number (580703716).

Almost surely, 2^1161407431 is an apocalyptic number.

1161407431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1161407431 is an equidigital number, since it uses as much as digits as its factorization.

1161407431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 1161407431 is about 34079.4282669179. The cubic root of 1161407431 is about 1051.1423488684.

The spelling of 1161407431 in words is "one billion, one hundred sixty-one million, four hundred seven thousand, four hundred thirty-one".