10981971 has 96 divisors (see below), whose sum is σ = 22643712. Its totient is φ = 4942080.

The previous prime is 10981969. The next prime is 10981987. The reversal of 10981971 is 17918901.

10981971 = 339² + 340² + ... + 415².

10981971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10981971 - 2¹ = 10981969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10981921) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 207181 + ... + 207233.

It is an arithmetic number, because the mean of its divisors is an integer number (235872).

Almost surely, 2^10981971 is an apocalyptic number.

10981971 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10981971 is an abundant number, since it is smaller than the sum of its proper divisors (11661741).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10981971 is a wasteful number, since it uses less digits than its factorization.

10981971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113 (or 110 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 36.

The square root of 10981971 is about 3313.9057017362. The cubic root of 10981971 is about 222.2764391694.

The spelling of 10981971 in words is "ten million, nine hundred eighty-one thousand, nine hundred seventy-one".