6310981 has 4 divisors (see below), whose sum is σ = 6457792. Its totient is φ = 6164172.

The previous prime is 6310963. The next prime is 6311023. The reversal of 6310981 is 1890136.

It is a happy number.

6310981 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6310981 - 2¹³ = 6302789 is a prime.

It is a super-2 number, since 2×6310981² = 79656962364722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6310921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73341 + ... + 73426.

It is an arithmetic number, because the mean of its divisors is an integer number (1614448).

Almost surely, 2^6310981 is an apocalyptic number.

It is an amenable number.

6310981 is a deficient number, since it is larger than the sum of its proper divisors (146811).

6310981 is a wasteful number, since it uses less digits than its factorization.

6310981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146810.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 6310981 is about 2512.1665947942. The cubic root of 6310981 is about 184.7987194835.

It can be divided in two parts, 63109 and 81, that added together give a triangular number (63190 = T₃₅₅).

The spelling of 6310981 in words is "six million, three hundred ten thousand, nine hundred eighty-one".