3126742231 has 4 divisors (see below), whose sum is σ = 3128415264. Its totient is φ = 3125069200.

The previous prime is 3126742217. The next prime is 3126742237. The reversal of 3126742231 is 1322476213.

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 3126742231 - 2⁷ = 3126742103 is a prime.

It is a super-2 number, since 2×3126742231² = 19553033958237714722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3126742193 and 3126742202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3126742237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 833710 + ... + 837451.

It is an arithmetic number, because the mean of its divisors is an integer number (782103816).

Almost surely, 2^3126742231 is an apocalyptic number.

3126742231 is a deficient number, since it is larger than the sum of its proper divisors (1673033).

3126742231 is a wasteful number, since it uses less digits than its factorization.

3126742231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1673032.

The product of its digits is 12096, while the sum is 31.

The square root of 3126742231 is about 55917.2802539609. The cubic root of 3126742231 is about 1462.2805153957.

The spelling of 3126742231 in words is "three billion, one hundred twenty-six million, seven hundred forty-two thousand, two hundred thirty-one".