1222313131 has 8 divisors (see below), whose sum is σ = 1316871584. Its totient is φ = 1127831040.

The previous prime is 1222313129. The next prime is 1222313137. The reversal of 1222313131 is 1313132221.

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 1222313131 - 2¹ = 1222313129 is a prime.

It is a super-2 number, since 2×1222313131² = 2988098780430046322, 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 = 1222313099 and 1222313108.

It is not an unprimeable number, because it can be changed into a prime (1222313137) 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, 16651 + ... + 52171.

It is an arithmetic number, because the mean of its divisors is an integer number (164608948).

Almost surely, 2^1222313131 is an apocalyptic number.

1222313131 is a deficient number, since it is larger than the sum of its proper divisors (94558453).

1222313131 is a wasteful number, since it uses less digits than its factorization.

1222313131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38181.

The product of its digits is 216, while the sum is 19.

The square root of 1222313131 is about 34961.5950866090. The cubic root of 1222313131 is about 1069.2046177983.

Adding to 1222313131 its reverse (1313132221), we get a palindrome (2535445352).

The spelling of 1222313131 in words is "one billion, two hundred twenty-two million, three hundred thirteen thousand, one hundred thirty-one".