1398374031 has 4 divisors (see below), whose sum is σ = 1864498712. Its totient is φ = 932249352.

The previous prime is 1398374011. The next prime is 1398374053. The reversal of 1398374031 is 1304738931.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1304738931 = 3 ⋅434912977.

It is not a de Polignac number, because 1398374031 - 2⁹ = 1398373519 is a prime.

It is a super-2 number, since 2×1398374031² = 3910899861150377922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1398374011) 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, 233062336 + ... + 233062341.

It is an arithmetic number, because the mean of its divisors is an integer number (466124678).

Almost surely, 2^1398374031 is an apocalyptic number.

1398374031 is a deficient number, since it is larger than the sum of its proper divisors (466124681).

1398374031 is an equidigital number, since it uses as much as digits as its factorization.

1398374031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466124680.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 1398374031 is about 37394.8396306228. The cubic root of 1398374031 is about 1118.2556901346.

The spelling of 1398374031 in words is "one billion, three hundred ninety-eight million, three hundred seventy-four thousand, thirty-one".