1523422443431 has 16 divisors (see below), whose sum is σ = 1781599505664. Its totient is φ = 1275383600064.

The previous prime is 1523422443427. The next prime is 1523422443451. The reversal of 1523422443431 is 1343442243251.

It is a happy number.

It is not a de Polignac number, because 1523422443431 - 2² = 1523422443427 is a prime.

It is a super-2 number, since 2×1523422443431² (a number of 25 digits) 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 (1523422443451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13363931 + ... + 13477443.

It is an arithmetic number, because the mean of its divisors is an integer number (111349969104).

Almost surely, 2^{1523422443431} is an apocalyptic number.

1523422443431 is a deficient number, since it is larger than the sum of its proper divisors (258177062233).

1523422443431 is a wasteful number, since it uses less digits than its factorization.

1523422443431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158150.

The product of its digits is 276480, while the sum is 38.

Adding to 1523422443431 its reverse (1343442243251), we get a palindrome (2866864686682).

The spelling of 1523422443431 in words is "one trillion, five hundred twenty-three billion, four hundred twenty-two million, four hundred forty-three thousand, four hundred thirty-one".