1431640023 has 16 divisors (see below), whose sum is σ = 2204879616. Its totient is φ = 816621440.

The previous prime is 1431640003. The next prime is 1431640039. The reversal of 1431640023 is 3200461341.

It is a cyclic number.

It is not a de Polignac number, because 1431640023 - 2⁸ = 1431639767 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1431639975 and 1431640002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1431640003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1275411 + ... + 1276532.

It is an arithmetic number, because the mean of its divisors is an integer number (137804976).

Almost surely, 2^1431640023 is an apocalyptic number.

1431640023 is a deficient number, since it is larger than the sum of its proper divisors (773239593).

1431640023 is a wasteful number, since it uses less digits than its factorization.

1431640023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2551974.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 1431640023 is about 37837.0192139920. The cubic root of 1431640023 is about 1127.0537032718.

The spelling of 1431640023 in words is "one billion, four hundred thirty-one million, six hundred forty thousand, twenty-three".