3131746427 has 4 divisors (see below), whose sum is σ = 3131923200. Its totient is φ = 3131569656.

The previous prime is 3131746417. The next prime is 3131746433. The reversal of 3131746427 is 7246471313.

It is a happy number.

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 3131746427 - 2⁶ = 3131746363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3131746417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58427 + ... + 98372.

It is an arithmetic number, because the mean of its divisors is an integer number (782980800).

Almost surely, 2^3131746427 is an apocalyptic number.

3131746427 is a deficient number, since it is larger than the sum of its proper divisors (176773).

3131746427 is a wasteful number, since it uses less digits than its factorization.

3131746427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176772.

The product of its digits is 84672, while the sum is 38.

The square root of 3131746427 is about 55962.0087827447. The cubic root of 3131746427 is about 1463.0602020949.

The spelling of 3131746427 in words is "three billion, one hundred thirty-one million, seven hundred forty-six thousand, four hundred twenty-seven".