10981431 has 12 divisors (see below), whose sum is σ = 15899208. Its totient is φ = 7303824.

The previous prime is 10981429. The next prime is 10981447. The reversal of 10981431 is 13418901.

10981431 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10981431 - 2¹ = 10981429 is a prime.

It is a super-2 number, since 2×10981431² = 241183653615522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 10981395 and 10981404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10981231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3541 + ... + 5873.

It is an arithmetic number, because the mean of its divisors is an integer number (1324934).

Almost surely, 2^10981431 is an apocalyptic number.

10981431 is a deficient number, since it is larger than the sum of its proper divisors (4917777).

10981431 is a wasteful number, since it uses less digits than its factorization.

10981431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2862 (or 2859 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 10981431 is about 3313.8242258756. The cubic root of 10981431 is about 222.2727958876.

The spelling of 10981431 in words is "ten million, nine hundred eighty-one thousand, four hundred thirty-one".