1431312123 has 8 divisors (see below), whose sum is σ = 2008859200. Its totient is φ = 903986568.

The previous prime is 1431312121. The next prime is 1431312131. The reversal of 1431312123 is 3212131341.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1431312123 - 2¹ = 1431312121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1431312123.

It is not an unprimeable number, because it can be changed into a prime (1431312121) 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, 12555313 + ... + 12555426.

It is an arithmetic number, because the mean of its divisors is an integer number (251107400).

Almost surely, 2^1431312123 is an apocalyptic number.

1431312123 is a deficient number, since it is larger than the sum of its proper divisors (577547077).

1431312123 is a wasteful number, since it uses less digits than its factorization.

1431312123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25110761.

The product of its digits is 432, while the sum is 21.

The square root of 1431312123 is about 37832.6859078231. The cubic root of 1431312123 is about 1126.9676506512.

Adding to 1431312123 its reverse (3212131341), we get a palindrome (4643443464).

The spelling of 1431312123 in words is "one billion, four hundred thirty-one million, three hundred twelve thousand, one hundred twenty-three".