1431623442 has 16 divisors (see below), whose sum is σ = 2888586720. Its totient is φ = 472984512.

The previous prime is 1431623441. The next prime is 1431623443. The reversal of 1431623442 is 2443261341.

It is an interprime number because it is at equal distance from previous prime (1431623441) and next prime (1431623443).

It is not an unprimeable number, because it can be changed into a prime (1431623441) 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, 1055092 + ... + 1056447.

It is an arithmetic number, because the mean of its divisors is an integer number (180536670).

Almost surely, 2^1431623442 is an apocalyptic number.

1431623442 is an abundant number, since it is smaller than the sum of its proper divisors (1456963278).

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

1431623442 is a wasteful number, since it uses less digits than its factorization.

1431623442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2111657.

The product of its digits is 13824, while the sum is 30.

The square root of 1431623442 is about 37836.8001025457. The cubic root of 1431623442 is about 1127.0493521432.

Adding to 1431623442 its reverse (2443261341), we get a palindrome (3874884783).

The spelling of 1431623442 in words is "one billion, four hundred thirty-one million, six hundred twenty-three thousand, four hundred forty-two".