10220311231 has 4 divisors (see below), whose sum is σ = 11006489032. Its totient is φ = 9434133432.

The previous prime is 10220311217. The next prime is 10220311249. The reversal of 10220311231 is 13211302201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13211302201 = 68261 ⋅193541.

It is a cyclic number.

It is not a de Polignac number, because 10220311231 - 2⁹ = 10220310719 is a prime.

It is a super-2 number, since 2×10220311231² (a number of 21 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 (10220311271) 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, 393088881 + ... + 393088906.

It is an arithmetic number, because the mean of its divisors is an integer number (2751622258).

Almost surely, 2^10220311231 is an apocalyptic number.

10220311231 is a deficient number, since it is larger than the sum of its proper divisors (786177801).

10220311231 is an equidigital number, since it uses as much as digits as its factorization.

10220311231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786177800.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 10220311231 its reverse (13211302201), we get a palindrome (23431613432).

The spelling of 10220311231 in words is "ten billion, two hundred twenty million, three hundred eleven thousand, two hundred thirty-one".