31423326646 has 16 divisors (see below), whose sum is σ = 48614489280. Its totient is φ = 15225116800.

The previous prime is 31423326629. The next prime is 31423326647. The reversal of 31423326646 is 64662332413.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31423326599 and 31423326608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31423326647) 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, 1645411 + ... + 1664398.

It is an arithmetic number, because the mean of its divisors is an integer number (3038405580).

Almost surely, 2^31423326646 is an apocalyptic number.

31423326646 is a deficient number, since it is larger than the sum of its proper divisors (17191162634).

31423326646 is a wasteful number, since it uses less digits than its factorization.

31423326646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3309959.

The product of its digits is 373248, while the sum is 40.

The spelling of 31423326646 in words is "thirty-one billion, four hundred twenty-three million, three hundred twenty-six thousand, six hundred forty-six".