31780338382418 has 8 divisors (see below), whose sum is σ = 50474655078012. Its totient is φ = 14955453356416.

The previous prime is 31780338382381. The next prime is 31780338382451. The reversal of 31780338382418 is 81428383308713.

It can be written as a sum of positive squares in 2 ways, for example, as 31232304656569 + 548033725849 = 5588587^2 + 740293^2 .

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, 467357917355 + ... + 467357917422.

Almost surely, 2^{31780338382418} is an apocalyptic number.

31780338382418 is a deficient number, since it is larger than the sum of its proper divisors (18694316695594).

31780338382418 is a wasteful number, since it uses less digits than its factorization.

31780338382418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934715834796.

The product of its (nonzero) digits is 18579456, while the sum is 59.

The spelling of 31780338382418 in words is "thirty-one trillion, seven hundred eighty billion, three hundred thirty-eight million, three hundred eighty-two thousand, four hundred eighteen".