31220314406 has 8 divisors (see below), whose sum is σ = 46833342024. Its totient is φ = 15609200400.

The previous prime is 31220314381. The next prime is 31220314439. The reversal of 31220314406 is 60441302213.

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

It is a super-2 number, since 2×31220314406² (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, 436895 + ... + 503306.

It is an arithmetic number, because the mean of its divisors is an integer number (5854167753).

Almost surely, 2^31220314406 is an apocalyptic number.

31220314406 is a deficient number, since it is larger than the sum of its proper divisors (15613027618).

31220314406 is a wasteful number, since it uses less digits than its factorization.

31220314406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 956806.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 31220314406 its reverse (60441302213), we get a palindrome (91661616619).

The spelling of 31220314406 in words is "thirty-one billion, two hundred twenty million, three hundred fourteen thousand, four hundred six".