131403868 has 12 divisors (see below), whose sum is σ = 230127912. Its totient is φ = 65653040.

The previous prime is 131403859. The next prime is 131403871. The reversal of 131403868 is 868304131.

It is a super-2 number, since 2×131403868² = 34533953050722848, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5803 + ... + 17218.

It is an arithmetic number, because the mean of its divisors is an integer number (19177326).

Almost surely, 2^131403868 is an apocalyptic number.

It is an amenable number.

131403868 is a deficient number, since it is larger than the sum of its proper divisors (98724044).

131403868 is a wasteful number, since it uses less digits than its factorization.

131403868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24452 (or 24450 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 131403868 is about 11463.1526204618. The cubic root of 131403868 is about 508.3966924400.

Adding to 131403868 its reverse (868304131), we get a palindrome (999707999).

The spelling of 131403868 in words is "one hundred thirty-one million, four hundred three thousand, eight hundred sixty-eight".