31446421239 has 16 divisors (see below), whose sum is σ = 42078879360. Its totient is φ = 20889180000.

The previous prime is 31446421231. The next prime is 31446421273. The reversal of 31446421239 is 93212464413.

It is a happy number.

It is not a de Polignac number, because 31446421239 - 2³ = 31446421231 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31446421197 and 31446421206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31446421231) 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, 2789364 + ... + 2800614.

It is an arithmetic number, because the mean of its divisors is an integer number (2629929960).

Almost surely, 2^31446421239 is an apocalyptic number.

31446421239 is a deficient number, since it is larger than the sum of its proper divisors (10632458121).

31446421239 is a wasteful number, since it uses less digits than its factorization.

31446421239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14510.

The product of its digits is 124416, while the sum is 39.

The spelling of 31446421239 in words is "thirty-one billion, four hundred forty-six million, four hundred twenty-one thousand, two hundred thirty-nine".