3143731 has 2 divisors, whose sum is σ = 3143732. Its totient is φ = 3143730.

The previous prime is 3143729. The next prime is 3143761. The reversal of 3143731 is 1373413.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3143731 - 2¹ = 3143729 is a prime.

It is a super-2 number, since 2×3143731² = 19766089200722, which contains 22 as substring.

Together with 3143729, it forms a pair of twin primes.

It is equal to p₂₂₆₄₁₇ and since 3143731 and 226417 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (3143711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1571865 + 1571866.

It is an arithmetic number, because the mean of its divisors is an integer number (1571866).

Almost surely, 2^3143731 is an apocalyptic number.

3143731 is a deficient number, since it is larger than the sum of its proper divisors (1).

3143731 is an equidigital number, since it uses as much as digits as its factorization.

3143731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 756, while the sum is 22.

The square root of 3143731 is about 1773.0569646799. The cubic root of 3143731 is about 146.4924107007.

The spelling of 3143731 in words is "three million, one hundred forty-three thousand, seven hundred thirty-one".