31331321314 has 4 divisors (see below), whose sum is σ = 46996981974. Its totient is φ = 15665660656.

The previous prime is 31331321269. The next prime is 31331321321. The reversal of 31331321314 is 41312313313.

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

It can be written as a sum of positive squares in only one way, i.e., 29396817025 + 1934504289 = 171455^2 + 43983^2 .

It is a super-2 number, since 2×31331321314² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 7832830327 + ... + 7832830330.

Almost surely, 2^31331321314 is an apocalyptic number.

31331321314 is a deficient number, since it is larger than the sum of its proper divisors (15665660660).

31331321314 is a wasteful number, since it uses less digits than its factorization.

31331321314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15665660659.

The product of its digits is 1944, while the sum is 25.

Adding to 31331321314 its reverse (41312313313), we get a palindrome (72643634627).

The spelling of 31331321314 in words is "thirty-one billion, three hundred thirty-one million, three hundred twenty-one thousand, three hundred fourteen".