331247346387 has 16 divisors (see below), whose sum is σ = 449035881888. Its totient is φ = 217147322880.

The previous prime is 331247346349. The next prime is 331247346403. The reversal of 331247346387 is 783643742133.

It is not a de Polignac number, because 331247346387 - 2¹⁶ = 331247280851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (331247346317) 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, 359403 + ... + 889755.

It is an arithmetic number, because the mean of its divisors is an integer number (28064742618).

Almost surely, 2^331247346387 is an apocalyptic number.

331247346387 is a deficient number, since it is larger than the sum of its proper divisors (117788535501).

331247346387 is a wasteful number, since it uses less digits than its factorization.

331247346387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533830.

The product of its digits is 6096384, while the sum is 51.

The spelling of 331247346387 in words is "three hundred thirty-one billion, two hundred forty-seven million, three hundred forty-six thousand, three hundred eighty-seven".