1224372381 has 32 divisors (see below), whose sum is σ = 1697092992. Its totient is φ = 784650240.

The previous prime is 1224372367. The next prime is 1224372389. The reversal of 1224372381 is 1832734221.

1224372381 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1224372381 - 2⁵ = 1224372349 is a prime.

It is a super-2 number, since 2×1224372381² = 2998175454711218322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224372389) 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, 3468301 + ... + 3468653.

It is an arithmetic number, because the mean of its divisors is an integer number (53034156).

Almost surely, 2^1224372381 is an apocalyptic number.

It is an amenable number.

1224372381 is a deficient number, since it is larger than the sum of its proper divisors (472720611).

1224372381 is a wasteful number, since it uses less digits than its factorization.

1224372381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733.

The product of its digits is 16128, while the sum is 33.

The square root of 1224372381 is about 34991.0328655786. The cubic root of 1224372381 is about 1069.8047161591.

The spelling of 1224372381 in words is "one billion, two hundred twenty-four million, three hundred seventy-two thousand, three hundred eighty-one".