31429699379 has 4 divisors (see below), whose sum is σ = 33847368576. Its totient is φ = 29012030184.

The previous prime is 31429699361. The next prime is 31429699381. The reversal of 31429699379 is 97399692413.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31429699379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31429699579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1208834579 + ... + 1208834604.

It is an arithmetic number, because the mean of its divisors is an integer number (8461842144).

Almost surely, 2^31429699379 is an apocalyptic number.

31429699379 is a deficient number, since it is larger than the sum of its proper divisors (2417669197).

31429699379 is a wasteful number, since it uses less digits than its factorization.

31429699379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2417669196.

The product of its digits is 19840464, while the sum is 62.

The spelling of 31429699379 in words is "thirty-one billion, four hundred twenty-nine million, six hundred ninety-nine thousand, three hundred seventy-nine".