31227981426 has 24 divisors (see below), whose sum is σ = 69489293484. Its totient is φ = 10127993760.

The previous prime is 31227981419. The next prime is 31227981437. The reversal of 31227981426 is 62418972213.

It can be written as a sum of positive squares in 2 ways, for example, as 31134955401 + 93026025 = 176451^2 + 9645^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23443765 + ... + 23445096.

Almost surely, 2^31227981426 is an apocalyptic number.

31227981426 is an abundant number, since it is smaller than the sum of its proper divisors (38261312058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31227981426 is a wasteful number, since it uses less digits than its factorization.

31227981426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46888906 (or 46888903 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The spelling of 31227981426 in words is "thirty-one billion, two hundred twenty-seven million, nine hundred eighty-one thousand, four hundred twenty-six".