131247455 has 4 divisors (see below), whose sum is σ = 157496952. Its totient is φ = 104997960.

The previous prime is 131247449. The next prime is 131247461. The reversal of 131247455 is 554742131.

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

It is an interprime number because it is at equal distance from previous prime (131247449) and next prime (131247461).

It is not a de Polignac number, because 131247455 - 2¹⁴ = 131231071 is a prime.

It is a Duffinian number.

It is a congruent 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, 13124741 + ... + 13124750.

It is an arithmetic number, because the mean of its divisors is an integer number (39374238).

Almost surely, 2^131247455 is an apocalyptic number.

131247455 is a deficient number, since it is larger than the sum of its proper divisors (26249497).

131247455 is an equidigital number, since it uses as much as digits as its factorization.

131247455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26249496.

The product of its digits is 16800, while the sum is 32.

The square root of 131247455 is about 11456.3281639450. The cubic root of 131247455 is about 508.1948936513.

Adding to 131247455 its reverse (554742131), we get a palindrome (685989586).

The spelling of 131247455 in words is "one hundred thirty-one million, two hundred forty-seven thousand, four hundred fifty-five".