10923981 has 16 divisors (see below), whose sum is σ = 15153600. Its totient is φ = 6991488.

The previous prime is 10923967. The next prime is 10924003. The reversal of 10923981 is 18932901.

It is not a de Polignac number, because 10923981 - 2⁷ = 10923853 is a prime.

It is a super-2 number, since 2×10923981² = 238666721776722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10923581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26505 + ... + 26913.

It is an arithmetic number, because the mean of its divisors is an integer number (947100).

Almost surely, 2^10923981 is an apocalyptic number.

It is an amenable number.

10923981 is a deficient number, since it is larger than the sum of its proper divisors (4229619).

10923981 is a wasteful number, since it uses less digits than its factorization.

10923981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 10923981 is about 3305.1446261851. The cubic root of 10923981 is about 221.8845069258.

It can be divided in two parts, 109 and 23981, that added together give a triangular number (24090 = T₂₁₉).

The spelling of 10923981 in words is "ten million, nine hundred twenty-three thousand, nine hundred eighty-one".