1367997631 has 48 divisors (see below), whose sum is σ = 1889038368. Its totient is φ = 973728000.

The previous prime is 1367997623. The next prime is 1367997643.

1367997631 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1367997631 - 2³ = 1367997623 is a prime.

It is a super-2 number, since 2×1367997631² = 3742835036843224322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1367997601) 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 47 ways as a sum of consecutive naturals, for example, 706741 + ... + 708673.

It is an arithmetic number, because the mean of its divisors is an integer number (39354966).

Almost surely, 2^1367997631 is an apocalyptic number.

1367997631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1367997631 is a deficient number, since it is larger than the sum of its proper divisors (521040737).

1367997631 is a wasteful number, since it uses less digits than its factorization.

1367997631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2072 (or 2065 counting only the distinct ones).

The product of its digits is 1285956, while the sum is 52.

The square root of 1367997631 is about 36986.4519925878. The cubic root of 1367997631 is about 1110.0991797860.

The spelling of 1367997631 in words is "one billion, three hundred sixty-seven million, nine hundred ninety-seven thousand, six hundred thirty-one".