31043211101 has 4 divisors (see below), whose sum is σ = 35477955552. Its totient is φ = 26608466652.

The previous prime is 31043211077. The next prime is 31043211107. The reversal of 31043211101 is 10111234013.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10111234013 = 37813 ⋅267401.

It is a cyclic number.

It is not a de Polignac number, because 31043211101 - 2¹⁴ = 31043194717 is a prime.

It is a super-2 number, since 2×31043211101² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31043211101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31043211107) 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, 2217372215 + ... + 2217372228.

It is an arithmetic number, because the mean of its divisors is an integer number (8869488888).

Almost surely, 2^31043211101 is an apocalyptic number.

It is an amenable number.

31043211101 is a deficient number, since it is larger than the sum of its proper divisors (4434744451).

31043211101 is an equidigital number, since it uses as much as digits as its factorization.

31043211101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4434744450.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 31043211101 its reverse (10111234013), we get a palindrome (41154445114).

The spelling of 31043211101 in words is "thirty-one billion, forty-three million, two hundred eleven thousand, one hundred one".