31217211314 has 4 divisors (see below), whose sum is σ = 46825816974. Its totient is φ = 15608605656.

The previous prime is 31217211301. The next prime is 31217211317. The reversal of 31217211314 is 41311271213.

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., 19277934025 + 11939277289 = 138845^2 + 109267^2 .

It is not an unprimeable number, because it can be changed into a prime (31217211317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7804302827 + ... + 7804302830.

Almost surely, 2^31217211314 is an apocalyptic number.

31217211314 is a deficient number, since it is larger than the sum of its proper divisors (15608605660).

31217211314 is a wasteful number, since it uses less digits than its factorization.

31217211314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15608605659.

The product of its digits is 1008, while the sum is 26.

Adding to 31217211314 its reverse (41311271213), we get a palindrome (72528482527).

The spelling of 31217211314 in words is "thirty-one billion, two hundred seventeen million, two hundred eleven thousand, three hundred fourteen".