31242201211 has 8 divisors (see below), whose sum is σ = 33796327040. Its totient is φ = 28709629632.

The previous prime is 31242201203. The next prime is 31242201313. The reversal of 31242201211 is 11210224213.

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

It is a cyclic number.

It is not a de Polignac number, because 31242201211 - 2³ = 31242201203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31242201611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5385546 + ... + 5391343.

It is an arithmetic number, because the mean of its divisors is an integer number (4224540880).

Almost surely, 2^31242201211 is an apocalyptic number.

31242201211 is a deficient number, since it is larger than the sum of its proper divisors (2554125829).

31242201211 is a wasteful number, since it uses less digits than its factorization.

31242201211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10777125.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 31242201211 its reverse (11210224213), we get a palindrome (42452425424).

The spelling of 31242201211 in words is "thirty-one billion, two hundred forty-two million, two hundred one thousand, two hundred eleven".