31220313001 has 16 divisors (see below), whose sum is σ = 32466428928. Its totient is φ = 29989713600.

The previous prime is 31220312957. The next prime is 31220313023. The reversal of 31220313001 is 10031302213.

It is a cyclic number.

It is not a de Polignac number, because 31220313001 - 2¹⁵ = 31220280233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31220313041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3540540 + ... + 3549346.

It is an arithmetic number, because the mean of its divisors is an integer number (2029151808).

Almost surely, 2^31220313001 is an apocalyptic number.

31220313001 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

31220313001 is a deficient number, since it is larger than the sum of its proper divisors (1246115927).

31220313001 is a wasteful number, since it uses less digits than its factorization.

31220313001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9672.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 31220313001 its reverse (10031302213), we get a palindrome (41251615214).

The spelling of 31220313001 in words is "thirty-one billion, two hundred twenty million, three hundred thirteen thousand, one".