131305750 has 32 divisors (see below), whose sum is σ = 246486240. Its totient is φ = 52376800.

The previous prime is 131305723. The next prime is 131305771. The reversal of 131305750 is 57503131.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164352 + ... + 165148.

It is an arithmetic number, because the mean of its divisors is an integer number (7702695).

Almost surely, 2^131305750 is an apocalyptic number.

131305750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131305750 is a deficient number, since it is larger than the sum of its proper divisors (115180490).

131305750 is an equidigital number, since it uses as much as digits as its factorization.

131305750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1473 (or 1463 counting only the distinct ones).

The product of its (nonzero) digits is 1575, while the sum is 25.

The square root of 131305750 is about 11458.8721085454. The cubic root of 131305750 is about 508.2701226308.

Adding to 131305750 its reverse (57503131), we get a palindrome (188808881).

The spelling of 131305750 in words is "one hundred thirty-one million, three hundred five thousand, seven hundred fifty".