3142810981 has 2 divisors, whose sum is σ = 3142810982. Its totient is φ = 3142810980.

The previous prime is 3142810949. The next prime is 3142810991. The reversal of 3142810981 is 1890182413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1713214881 + 1429596100 = 41391^2 + 37810^2 .

It is a cyclic number.

It is not a de Polignac number, because 3142810981 - 2⁵ = 3142810949 is a prime.

It is a super-2 number, since 2×3142810981² = 19754521724588364722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3142810981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3142810991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1571405490 + 1571405491.

It is an arithmetic number, because the mean of its divisors is an integer number (1571405491).

Almost surely, 2^3142810981 is an apocalyptic number.

It is an amenable number.

3142810981 is a deficient number, since it is larger than the sum of its proper divisors (1).

3142810981 is an equidigital number, since it uses as much as digits as its factorization.

3142810981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 3142810981 is about 56060.7793470622. The cubic root of 3142810981 is about 1464.7811887671.

The spelling of 3142810981 in words is "three billion, one hundred forty-two million, eight hundred ten thousand, nine hundred eighty-one".