131501345 has 8 divisors (see below), whose sum is σ = 157873320. Its totient is φ = 105153280.

The previous prime is 131501339. The next prime is 131501407. The reversal of 131501345 is 543105131.

It can be written as a sum of positive squares in 4 ways, for example, as 77933584 + 53567761 = 8828^2 + 7319^2 .

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

It is not a de Polignac number, because 131501345 - 2¹⁶ = 131435809 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131501345.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10025 + ... + 19065.

It is an arithmetic number, because the mean of its divisors is an integer number (19734165).

Almost surely, 2^131501345 is an apocalyptic number.

It is an amenable number.

131501345 is a deficient number, since it is larger than the sum of its proper divisors (26371975).

131501345 is an equidigital number, since it uses as much as digits as its factorization.

131501345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11955.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 131501345 is about 11467.4035858166. The cubic root of 131501345 is about 508.5223730007.

Adding to 131501345 its reverse (543105131), we get a palindrome (674606476).

The spelling of 131501345 in words is "one hundred thirty-one million, five hundred one thousand, three hundred forty-five".