1431123551 has 16 divisors (see below), whose sum is σ = 1706425728. Its totient is φ = 1183010400.

The previous prime is 1431123541. The next prime is 1431123553. The reversal of 1431123551 is 1553211341.

It is not a de Polignac number, because 1431123551 - 2³⁰ = 357381727 is a prime.

It is a super-2 number, since 2×1431123551² = 4096229236453699202, which contains 22 as substring.

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 1431123551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1431123553) 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, 65105 + ... + 84266.

It is an arithmetic number, because the mean of its divisors is an integer number (106651608).

Almost surely, 2^1431123551 is an apocalyptic number.

1431123551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1431123551 is a deficient number, since it is larger than the sum of its proper divisors (275302177).

1431123551 is a wasteful number, since it uses less digits than its factorization.

1431123551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149462.

The product of its digits is 1800, while the sum is 26.

The square root of 1431123551 is about 37830.1936421161. The cubic root of 1431123551 is about 1126.9181567000.

Adding to 1431123551 its reverse (1553211341), we get a palindrome (2984334892).

The spelling of 1431123551 in words is "one billion, four hundred thirty-one million, one hundred twenty-three thousand, five hundred fifty-one".