3131442431 has 8 divisors (see below), whose sum is σ = 3373913424. Its totient is φ = 2889198720.

The previous prime is 3131442397. The next prime is 3131442437. The reversal of 3131442431 is 1342441313.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3131442431 is a prime.

It is a super-2 number, since 2×3131442431² = 19611863397334379522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3131442431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131442437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27641 + ... + 83826.

It is an arithmetic number, because the mean of its divisors is an integer number (421739178).

Almost surely, 2^3131442431 is an apocalyptic number.

3131442431 is a deficient number, since it is larger than the sum of its proper divisors (242470993).

3131442431 is a wasteful number, since it uses less digits than its factorization.

3131442431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113641.

The product of its digits is 3456, while the sum is 26.

The square root of 3131442431 is about 55959.2926241925. The cubic root of 3131442431 is about 1463.0128612207.

Adding to 3131442431 its reverse (1342441313), we get a palindrome (4473883744).

The spelling of 3131442431 in words is "three billion, one hundred thirty-one million, four hundred forty-two thousand, four hundred thirty-one".