31020201001 has 4 divisors (see below), whose sum is σ = 31030889472. Its totient is φ = 31009512532.

The previous prime is 31020200921. The next prime is 31020201013. The reversal of 31020201001 is 10010202013.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31020201001 - 2¹⁹ = 31019676713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31020201041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5339881 + ... + 5345686.

It is an arithmetic number, because the mean of its divisors is an integer number (7757722368).

Almost surely, 2^31020201001 is an apocalyptic number.

It is an amenable number.

31020201001 is a deficient number, since it is larger than the sum of its proper divisors (10688471).

31020201001 is a wasteful number, since it uses less digits than its factorization.

31020201001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10688470.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 31020201001 its reverse (10010202013), we get a palindrome (41030403014).

The spelling of 31020201001 in words is "thirty-one billion, twenty million, two hundred one thousand, one".