131263743 has 16 divisors (see below), whose sum is σ = 189544320. Its totient is φ = 80322144.

The previous prime is 131263667. The next prime is 131263763. The reversal of 131263743 is 347362131.

It is a de Polignac number, because none of the positive numbers 2^k-131263743 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131263743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131263763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2421 + ... + 16382.

It is an arithmetic number, because the mean of its divisors is an integer number (11846520).

Almost surely, 2^131263743 is an apocalyptic number.

131263743 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

131263743 is a deficient number, since it is larger than the sum of its proper divisors (58280577).

131263743 is a wasteful number, since it uses less digits than its factorization.

131263743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18998.

The product of its digits is 9072, while the sum is 30.

The square root of 131263743 is about 11457.0390153826. The cubic root of 131263743 is about 508.2159153568.

The spelling of 131263743 in words is "one hundred thirty-one million, two hundred sixty-three thousand, seven hundred forty-three".