981531422 has 4 divisors (see below), whose sum is σ = 1472297136. Its totient is φ = 490765710.

The previous prime is 981531407. The next prime is 981531443. The reversal of 981531422 is 224135189.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245382854 + ... + 245382857.

It is an arithmetic number, because the mean of its divisors is an integer number (368074284).

Almost surely, 2^981531422 is an apocalyptic number.

981531422 is a deficient number, since it is larger than the sum of its proper divisors (490765714).

981531422 is a wasteful number, since it uses less digits than its factorization.

981531422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490765713.

The product of its digits is 17280, while the sum is 35.

The square root of 981531422 is about 31329.4018774697. The cubic root of 981531422 is about 993.8055149188.

The spelling of 981531422 in words is "nine hundred eighty-one million, five hundred thirty-one thousand, four hundred twenty-two".