131405763 has 8 divisors (see below), whose sum is σ = 175383376. Its totient is φ = 87516000.

The previous prime is 131405719. The next prime is 131405789. The reversal of 131405763 is 367504131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131405763 - 2⁹ = 131405251 is a prime.

It is a super-2 number, since 2×131405763² = 34534949099224338, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131405763.

It is not an unprimeable number, because it can be changed into a prime (131405363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18388 + ... + 24513.

It is an arithmetic number, because the mean of its divisors is an integer number (21922922).

Almost surely, 2^131405763 is an apocalyptic number.

131405763 is a deficient number, since it is larger than the sum of its proper divisors (43977613).

131405763 is a wasteful number, since it uses less digits than its factorization.

131405763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43925.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 131405763 is about 11463.2352763083. The cubic root of 131405763 is about 508.3991363231.

Adding to 131405763 its reverse (367504131), we get a palindrome (498909894).

The spelling of 131405763 in words is "one hundred thirty-one million, four hundred five thousand, seven hundred sixty-three".