1431212431 has 8 divisors (see below), whose sum is σ = 1569950928. Its totient is φ = 1293912000.

The previous prime is 1431212423. The next prime is 1431212539. The reversal of 1431212431 is 1342121341.

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

It is a cyclic number.

It is not a de Polignac number, because 1431212431 - 2³ = 1431212423 is a prime.

It is a super-2 number, since 2×1431212431² = 4096738045297859522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1431212131) 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, 357430 + ... + 361411.

It is an arithmetic number, because the mean of its divisors is an integer number (196243866).

Almost surely, 2^1431212431 is an apocalyptic number.

1431212431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1431212431 is a deficient number, since it is larger than the sum of its proper divisors (138738497).

1431212431 is a wasteful number, since it uses less digits than its factorization.

1431212431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719033.

The product of its digits is 576, while the sum is 22.

The square root of 1431212431 is about 37831.3683469155. The cubic root of 1431212431 is about 1126.9414853199.

Adding to 1431212431 its reverse (1342121341), we get a palindrome (2773333772).

The spelling of 1431212431 in words is "one billion, four hundred thirty-one million, two hundred twelve thousand, four hundred thirty-one".