1398341231 has 4 divisors (see below), whose sum is σ = 1598104272. Its totient is φ = 1198578192.

The previous prime is 1398341221. The next prime is 1398341249. The reversal of 1398341231 is 1321438931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1321438931 = 1109 ⋅1191559.

It is not a de Polignac number, because 1398341231 - 2¹⁴ = 1398324847 is a prime.

It is a super-2 number, since 2×1398341231² = 3910716396629190722, 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 = 1398341191 and 1398341200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1398341201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99881510 + ... + 99881523.

It is an arithmetic number, because the mean of its divisors is an integer number (399526068).

Almost surely, 2^1398341231 is an apocalyptic number.

1398341231 is a deficient number, since it is larger than the sum of its proper divisors (199763041).

1398341231 is an equidigital number, since it uses as much as digits as its factorization.

1398341231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199763040.

The product of its digits is 15552, while the sum is 35.

The square root of 1398341231 is about 37394.4010648653. The cubic root of 1398341231 is about 1118.2469468674.

The spelling of 1398341231 in words is "one billion, three hundred ninety-eight million, three hundred forty-one thousand, two hundred thirty-one".