131337787 has 16 divisors (see below), whose sum is σ = 156441600. Its totient is φ = 110166504.

The previous prime is 131337769. The next prime is 131337799. The reversal of 131337787 is 787733131.

It is not a de Polignac number, because 131337787 - 2¹⁵ = 131305019 is a prime.

It is a super-2 number, since 2×131337787² = 34499228588114738, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131337707) 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, 12048 + ... + 20194.

It is an arithmetic number, because the mean of its divisors is an integer number (9777600).

Almost surely, 2^131337787 is an apocalyptic number.

131337787 is a deficient number, since it is larger than the sum of its proper divisors (25103813).

131337787 is an frugal number, since it uses more digits than its factorization.

131337787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8215 (or 8201 counting only the distinct ones).

The product of its digits is 74088, while the sum is 40.

The square root of 131337787 is about 11460.2699357389. The cubic root of 131337787 is about 508.3114565042.

The spelling of 131337787 in words is "one hundred thirty-one million, three hundred thirty-seven thousand, seven hundred eighty-seven".