131225330515 has 4 divisors (see below), whose sum is σ = 157470396624. Its totient is φ = 104980264408.

The previous prime is 131225330501. The next prime is 131225330527. The reversal of 131225330515 is 515033522131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131225330515 - 2¹³ = 131225322323 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13122533047 + ... + 13122533056.

It is an arithmetic number, because the mean of its divisors is an integer number (39367599156).

Almost surely, 2^131225330515 is an apocalyptic number.

131225330515 is a deficient number, since it is larger than the sum of its proper divisors (26245066109).

131225330515 is an equidigital number, since it uses as much as digits as its factorization.

131225330515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26245066108.

The product of its (nonzero) digits is 13500, while the sum is 31.

Adding to 131225330515 its reverse (515033522131), we get a palindrome (646258852646).

The spelling of 131225330515 in words is "one hundred thirty-one billion, two hundred twenty-five million, three hundred thirty thousand, five hundred fifteen".