116211431 has 4 divisors (see below), whose sum is σ = 132813072. Its totient is φ = 99609792.

The previous prime is 116211419. The next prime is 116211443. The reversal of 116211431 is 134112611.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (116211419) and next prime (116211443).

It is a cyclic number.

It is not a de Polignac number, because 116211431 - 2¹⁰ = 116210407 is a prime.

It is a super-2 number, since 2×116211431² = 27010193390135522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116211631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8300810 + ... + 8300823.

It is an arithmetic number, because the mean of its divisors is an integer number (33203268).

Almost surely, 2^116211431 is an apocalyptic number.

116211431 is a deficient number, since it is larger than the sum of its proper divisors (16601641).

116211431 is an equidigital number, since it uses as much as digits as its factorization.

116211431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16601640.

The product of its digits is 144, while the sum is 20.

The square root of 116211431 is about 10780.1405834989. The cubic root of 116211431 is about 487.9960233820.

The spelling of 116211431 in words is "one hundred sixteen million, two hundred eleven thousand, four hundred thirty-one".