10978531 has 4 divisors (see below), whose sum is σ = 10985992. Its totient is φ = 10971072.

The previous prime is 10978519. The next prime is 10978537. The reversal of 10978531 is 13587901.

It is a happy number.

10978531 is digitally balanced in base 2, 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 brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 13587901 = 311 ⋅43691.

It is a cyclic number.

It is not a de Polignac number, because 10978531 - 2¹⁵ = 10945763 is a prime.

It is a super-2 number, since 2×10978531² = 241056285835922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10978537) 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, 705 + ... + 4738.

It is an arithmetic number, because the mean of its divisors is an integer number (2746498).

Almost surely, 2^10978531 is an apocalyptic number.

10978531 is a deficient number, since it is larger than the sum of its proper divisors (7461).

10978531 is an equidigital number, since it uses as much as digits as its factorization.

10978531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7460.

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 10978531 is about 3313.3866360568. The cubic root of 10978531 is about 222.2532280718.

The spelling of 10978531 in words is "ten million, nine hundred seventy-eight thousand, five hundred thirty-one".