31000002211223 has 4 divisors (see below), whose sum is σ = 31045390209288. Its totient is φ = 30954614213160.

The previous prime is 31000002211159. The next prime is 31000002211253. The reversal of 31000002211223 is 32211220000013.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31000002211223 - 2⁶ = 31000002211159 is a prime.

It is a super-2 number, since 2×31000002211223² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31000002211253) 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, 22693998008 + ... + 22693999373.

It is an arithmetic number, because the mean of its divisors is an integer number (7761347552322).

Almost surely, 2^{31000002211223} is an apocalyptic number.

31000002211223 is a deficient number, since it is larger than the sum of its proper divisors (45387998065).

31000002211223 is an equidigital number, since it uses as much as digits as its factorization.

31000002211223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45387998064.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 31000002211223 its reverse (32211220000013), we get a palindrome (63211222211236).

The spelling of 31000002211223 in words is "thirty-one trillion, two million, two hundred eleven thousand, two hundred twenty-three".