981864231 has 8 divisors (see below), whose sum is σ = 1311957504. Its totient is φ = 653173560.

The previous prime is 981864229. The next prime is 981864239. The reversal of 981864231 is 132468189.

981864231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 981864231 - 2¹ = 981864229 is a prime.

It is a super-2 number, since 2×981864231² = 1928114736234442722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981864239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 349015 + ... + 351816.

It is an arithmetic number, because the mean of its divisors is an integer number (163994688).

Almost surely, 2^981864231 is an apocalyptic number.

981864231 is a deficient number, since it is larger than the sum of its proper divisors (330093273).

981864231 is a wasteful number, since it uses less digits than its factorization.

981864231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701301.

The product of its digits is 82944, while the sum is 42.

The square root of 981864231 is about 31334.7128756592. The cubic root of 981864231 is about 993.9178258229.

The spelling of 981864231 in words is "nine hundred eighty-one million, eight hundred sixty-four thousand, two hundred thirty-one".