111368431 has 2 divisors, whose sum is σ = 111368432. Its totient is φ = 111368430.

The previous prime is 111368419. The next prime is 111368561. The reversal of 111368431 is 134863111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111368431 - 2¹⁹ = 110844143 is a prime.

It is a super-2 number, since 2×111368431² = 24805854846803522, 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 111368431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111368401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55684215 + 55684216.

It is an arithmetic number, because the mean of its divisors is an integer number (55684216).

Almost surely, 2^111368431 is an apocalyptic number.

111368431 is a deficient number, since it is larger than the sum of its proper divisors (1).

111368431 is an equidigital number, since it uses as much as digits as its factorization.

111368431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 28.

The square root of 111368431 is about 10553.1242293455. The cubic root of 111368431 is about 481.1206901471.

The spelling of 111368431 in words is "one hundred eleven million, three hundred sixty-eight thousand, four hundred thirty-one".