131224774 has 4 divisors (see below), whose sum is σ = 196837164. Its totient is φ = 65612386.

The previous prime is 131224763. The next prime is 131224783. The reversal of 131224774 is 477422131.

131224774 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 477422131 = 379 ⋅1259689.

It is a super-2 number, since 2×131224774² = 34439882622702152, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32806192 + ... + 32806195.

It is an arithmetic number, because the mean of its divisors is an integer number (49209291).

Almost surely, 2^131224774 is an apocalyptic number.

131224774 is a deficient number, since it is larger than the sum of its proper divisors (65612390).

131224774 is an equidigital number, since it uses as much as digits as its factorization.

131224774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65612389.

The product of its digits is 9408, while the sum is 31.

The square root of 131224774 is about 11455.3382315844. The cubic root of 131224774 is about 508.1656180807.

The spelling of 131224774 in words is "one hundred thirty-one million, two hundred twenty-four thousand, seven hundred seventy-four".