698112431 has 4 divisors (see below), whose sum is σ = 700221864. Its totient is φ = 696003000.

The previous prime is 698112397. The next prime is 698112451. The reversal of 698112431 is 134211896.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-698112431 is a prime.

It is a super-2 number, since 2×698112431² = 974721932633459522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 698112391 and 698112400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (698112451) 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 in 3 ways as a sum of consecutive naturals, for example, 1054220 + ... + 1054881.

It is an arithmetic number, because the mean of its divisors is an integer number (175055466).

Almost surely, 2^698112431 is an apocalyptic number.

698112431 is a deficient number, since it is larger than the sum of its proper divisors (2109433).

698112431 is a wasteful number, since it uses less digits than its factorization.

698112431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2109432.

The product of its digits is 10368, while the sum is 35.

The square root of 698112431 is about 26421.8173296236. The cubic root of 698112431 is about 887.1051975657.

The spelling of 698112431 in words is "six hundred ninety-eight million, one hundred twelve thousand, four hundred thirty-one".