1423121331 has 16 divisors (see below), whose sum is σ = 1919855520. Its totient is φ = 937612800.

The previous prime is 1423121317. The next prime is 1423121351. The reversal of 1423121331 is 1331213241.

It is not a de Polignac number, because 1423121331 - 2⁶ = 1423121267 is a prime.

It is a super-2 number, since 2×1423121331² = 4050548645494423122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1423121298 and 1423121307.

It is not an unprimeable number, because it can be changed into a prime (1423121311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125701 + ... + 136553.

It is an arithmetic number, because the mean of its divisors is an integer number (119990970).

Almost surely, 2^1423121331 is an apocalyptic number.

1423121331 is a deficient number, since it is larger than the sum of its proper divisors (496734189).

1423121331 is a wasteful number, since it uses less digits than its factorization.

1423121331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11366.

The product of its digits is 432, while the sum is 21.

The square root of 1423121331 is about 37724.2803907510. The cubic root of 1423121331 is about 1124.8138176832.

Adding to 1423121331 its reverse (1331213241), we get a palindrome (2754334572).

The spelling of 1423121331 in words is "one billion, four hundred twenty-three million, one hundred twenty-one thousand, three hundred thirty-one".