1398504246931 has 4 divisors (see below), whose sum is σ = 1525640996664. Its totient is φ = 1271367497200.

The previous prime is 1398504246889. The next prime is 1398504246941. The reversal of 1398504246931 is 1396424058931.

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

It is a cyclic number.

It is not a de Polignac number, because 1398504246931 - 2¹³ = 1398504238739 is a prime.

It is a super-2 number, since 2×1398504246931² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1398504246941) 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, 63568374850 + ... + 63568374871.

It is an arithmetic number, because the mean of its divisors is an integer number (381410249166).

Almost surely, 2^{1398504246931} is an apocalyptic number.

1398504246931 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1398504246931 is a deficient number, since it is larger than the sum of its proper divisors (127136749733).

1398504246931 is a wasteful number, since it uses less digits than its factorization.

1398504246931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127136749732.

The product of its (nonzero) digits is 5598720, while the sum is 55.

The spelling of 1398504246931 in words is "one trillion, three hundred ninety-eight billion, five hundred four million, two hundred forty-six thousand, nine hundred thirty-one".