1213422031 has 8 divisors (see below), whose sum is σ = 1284457680. Its totient is φ = 1144332672.

The previous prime is 1213422029. The next prime is 1213422043. The reversal of 1213422031 is 1302243121.

It is a happy number.

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 1213422031 - 2¹ = 1213422029 is a prime.

It is a super-2 number, since 2×1213422031² = 2944786050632329922, which 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 (1213422011) 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, 485290 + ... + 487783.

It is an arithmetic number, because the mean of its divisors is an integer number (160557210).

Almost surely, 2^1213422031 is an apocalyptic number.

1213422031 is a deficient number, since it is larger than the sum of its proper divisors (71035649).

1213422031 is an equidigital number, since it uses as much as digits as its factorization.

1213422031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 973145.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1213422031 is about 34834.2077705235. The cubic root of 1213422031 is about 1066.6058432874.

Adding to 1213422031 its reverse (1302243121), we get a palindrome (2515665152).

The spelling of 1213422031 in words is "one billion, two hundred thirteen million, four hundred twenty-two thousand, thirty-one".