31320212001 has 16 divisors (see below), whose sum is σ = 44975930496. Its totient is φ = 19272554496.

The previous prime is 31320211999. The next prime is 31320212059. The reversal of 31320212001 is 10021202313.

It is not a de Polignac number, because 31320212001 - 2¹ = 31320211999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31320212071) 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, 799201 + ... + 837473.

It is an arithmetic number, because the mean of its divisors is an integer number (2810995656).

Almost surely, 2^31320212001 is an apocalyptic number.

It is an amenable number.

31320212001 is a deficient number, since it is larger than the sum of its proper divisors (13655718495).

31320212001 is a wasteful number, since it uses less digits than its factorization.

31320212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59272.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 31320212001 its reverse (10021202313), we get a palindrome (41341414314).

The spelling of 31320212001 in words is "thirty-one billion, three hundred twenty million, two hundred twelve thousand, one".