31220402214 has 8 divisors (see below), whose sum is σ = 62440804440. Its totient is φ = 10406800736.

The previous prime is 31220402189. The next prime is 31220402231. The reversal of 31220402214 is 41220402213.

It is a sphenic number, since it is the product of 3 distinct primes.

31220402214 is an admirable number.

It is a super-2 number, since 2×31220402214² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2601700179 + ... + 2601700190.

It is an arithmetic number, because the mean of its divisors is an integer number (7805100555).

Almost surely, 2^31220402214 is an apocalyptic number.

31220402214 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31220402214 is a wasteful number, since it uses less digits than its factorization.

31220402214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5203400374.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 31220402214 its reverse (41220402213), we get a palindrome (72440804427).

Subtracting 31220402214 from its reverse (41220402213), we obtain a palindrome (9999999999).

The spelling of 31220402214 in words is "thirty-one billion, two hundred twenty million, four hundred two thousand, two hundred fourteen".