1523221431040 has 72 divisors (see below), whose sum is σ = 3648811058928. Its totient is φ = 609251880960.

The previous prime is 1523221431031. The next prime is 1523221431047. The reversal of 1523221431040 is 401341223251.

It is not an unprimeable number, because it can be changed into a prime (1523221431047) 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, 33437719 + ... + 33483241.

It is an arithmetic number, because the mean of its divisors is an integer number (50677931374).

Almost surely, 2^{1523221431040} is an apocalyptic number.

1523221431040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1523221431040 is an abundant number, since it is smaller than the sum of its proper divisors (2125589627888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1523221431040 is an equidigital number, since it uses as much as digits as its factorization.

1523221431040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71685 (or 71671 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 1523221431040 its reverse (401341223251), we get a palindrome (1924562654291).

The spelling of 1523221431040 in words is "one trillion, five hundred twenty-three billion, two hundred twenty-one million, four hundred thirty-one thousand, forty".