3142731 has 8 divisors (see below), whose sum is σ = 4202640. Its totient is φ = 2088992.

The previous prime is 3142729. The next prime is 3142747. The reversal of 3142731 is 1372413.

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

It is a cyclic number.

It is not a de Polignac number, because 3142731 - 2¹ = 3142729 is a prime.

It is a super-2 number, since 2×3142731² = 19753516276722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3142698 and 3142707.

It is not an unprimeable number, because it can be changed into a prime (3142721) 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, 180 + ... + 2513.

It is an arithmetic number, because the mean of its divisors is an integer number (525330).

Almost surely, 2^3142731 is an apocalyptic number.

3142731 is a deficient number, since it is larger than the sum of its proper divisors (1059909).

3142731 is a wasteful number, since it uses less digits than its factorization.

3142731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3085.

The product of its digits is 504, while the sum is 21.

The square root of 3142731 is about 1772.7749434150. The cubic root of 3142731 is about 146.4768762985.

The spelling of 3142731 in words is "three million, one hundred forty-two thousand, seven hundred thirty-one".