1222231031 has 32 divisors (see below), whose sum is σ = 1568448000. Its totient is φ = 927148032.

The previous prime is 1222231007. The next prime is 1222231067. The reversal of 1222231031 is 1301322221.

It is a cyclic number.

It is not a de Polignac number, because 1222231031 - 2²² = 1218036727 is a prime.

It is a super-2 number, since 2×1222231031² = 2987697386278645922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222231001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 312335 + ... + 316223.

It is an arithmetic number, because the mean of its divisors is an integer number (49014000).

Almost surely, 2^1222231031 is an apocalyptic number.

1222231031 is a deficient number, since it is larger than the sum of its proper divisors (346216969).

1222231031 is a wasteful number, since it uses less digits than its factorization.

1222231031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4071.

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

The square root of 1222231031 is about 34960.4209213791. The cubic root of 1222231031 is about 1069.1806785794.

Adding to 1222231031 its reverse (1301322221), we get a palindrome (2523553252).

The spelling of 1222231031 in words is "one billion, two hundred twenty-two million, two hundred thirty-one thousand, thirty-one".