31694579349 has 4 divisors (see below), whose sum is σ = 42259439136. Its totient is φ = 21129719564.

The previous prime is 31694579333. The next prime is 31694579369. The reversal of 31694579349 is 94397549613.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94397549613 = 3 ⋅31465849871.

It is a cyclic number.

It is not a de Polignac number, because 31694579349 - 2⁴ = 31694579333 is a prime.

It is a super-2 number, since 2×31694579349² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31694579292 and 31694579301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31694579369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5282429889 + ... + 5282429894.

It is an arithmetic number, because the mean of its divisors is an integer number (10564859784).

Almost surely, 2^31694579349 is an apocalyptic number.

It is an amenable number.

31694579349 is a deficient number, since it is larger than the sum of its proper divisors (10564859787).

31694579349 is a wasteful number, since it uses less digits than its factorization.

31694579349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10564859786.

The product of its digits is 22044960, while the sum is 60.

The spelling of 31694579349 in words is "thirty-one billion, six hundred ninety-four million, five hundred seventy-nine thousand, three hundred forty-nine".