3142981 has 2 divisors, whose sum is σ = 3142982. Its totient is φ = 3142980.

The previous prime is 3142969. The next prime is 3142987. The reversal of 3142981 is 1892413.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2160900 + 982081 = 1470^2 + 991^2 .

It is an emirp because it is prime and its reverse (1892413) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3142981 - 2⁵ = 3142949 is a prime.

It is a super-2 number, since 2×3142981² = 19756659132722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3142987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1571490 + 1571491.

It is an arithmetic number, because the mean of its divisors is an integer number (1571491).

Almost surely, 2^3142981 is an apocalyptic number.

It is an amenable number.

3142981 is a deficient number, since it is larger than the sum of its proper divisors (1).

3142981 is an equidigital number, since it uses as much as digits as its factorization.

3142981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 28.

The square root of 3142981 is about 1772.8454529372. The cubic root of 3142981 is about 146.4807602079.

The spelling of 3142981 in words is "three million, one hundred forty-two thousand, nine hundred eighty-one".