31679151442 has 8 divisors (see below), whose sum is σ = 47634911100. Its totient is φ = 15800847744.

The previous prime is 31679151419. The next prime is 31679151521. The reversal of 31679151442 is 24415197613.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 23700910401 + 7978241041 = 153951^2 + 89321^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19362967 + ... + 19364602.

Almost surely, 2^31679151442 is an apocalyptic number.

31679151442 is a deficient number, since it is larger than the sum of its proper divisors (15955759658).

31679151442 is a wasteful number, since it uses less digits than its factorization.

31679151442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38727980.

The product of its digits is 181440, while the sum is 43.

The spelling of 31679151442 in words is "thirty-one billion, six hundred seventy-nine million, one hundred fifty-one thousand, four hundred forty-two".