1222131031 has 8 divisors (see below), whose sum is σ = 1333751184. Its totient is φ = 1110597120.

The previous prime is 1222131017. The next prime is 1222131077. The reversal of 1222131031 is 1301312221.

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 1222131031 - 2¹¹ = 1222128983 is a prime.

It is a super-2 number, since 2×1222131031² = 2987208513866245922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1222130996 and 1222131014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222131331) 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, 10105 + ... + 50461.

It is an arithmetic number, because the mean of its divisors is an integer number (166718898).

Almost surely, 2^1222131031 is an apocalyptic number.

1222131031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1222131031 is a deficient number, since it is larger than the sum of its proper divisors (111620153).

1222131031 is a wasteful number, since it uses less digits than its factorization.

1222131031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43121.

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

The square root of 1222131031 is about 34958.9907033942. The cubic root of 1222131031 is about 1069.1515185213.

Adding to 1222131031 its reverse (1301312221), we get a palindrome (2523443252).

The spelling of 1222131031 in words is "one billion, two hundred twenty-two million, one hundred thirty-one thousand, thirty-one".