1431323141 has 6 divisors (see below), whose sum is σ = 1458841650. Its totient is φ = 1404314288.

The previous prime is 1431323137. The next prime is 1431323183. The reversal of 1431323141 is 1413231341.

It can be written as a sum of positive squares in 3 ways, for example, as 410265025 + 1021058116 = 20255^2 + 31954^2 .

It is not a de Polignac number, because 1431323141 - 2² = 1431323137 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1431322141) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 251966 + ... + 257583.

It is an arithmetic number, because the mean of its divisors is an integer number (243140275).

Almost surely, 2^1431323141 is an apocalyptic number.

It is an amenable number.

1431323141 is a deficient number, since it is larger than the sum of its proper divisors (27518509).

1431323141 is an frugal number, since it uses more digits than its factorization.

1431323141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509655 (or 509602 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

The square root of 1431323141 is about 37832.8315223696. The cubic root of 1431323141 is about 1126.9705423796.

Adding to 1431323141 its reverse (1413231341), we get a palindrome (2844554482).

The spelling of 1431323141 in words is "one billion, four hundred thirty-one million, three hundred twenty-three thousand, one hundred forty-one".