1431123155 has 48 divisors (see below), whose sum is σ = 2307613536. Its totient is φ = 839623680.

The previous prime is 1431123139. The next prime is 1431123229. The reversal of 1431123155 is 5513211341.

It is not a de Polignac number, because 1431123155 - 2⁴ = 1431123139 is a prime.

It is a super-2 number, since 2×1431123155² = 4096226969554308050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 30197 + ... + 61433.

It is an arithmetic number, because the mean of its divisors is an integer number (48075282).

Almost surely, 2^1431123155 is an apocalyptic number.

1431123155 is a deficient number, since it is larger than the sum of its proper divisors (876490381).

1431123155 is a wasteful number, since it uses less digits than its factorization.

1431123155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31284 (or 31277 counting only the distinct ones).

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

The square root of 1431123155 is about 37830.1884082012. The cubic root of 1431123155 is about 1126.9180527584.

Adding to 1431123155 its reverse (5513211341), we get a palindrome (6944334496).

The spelling of 1431123155 in words is "one billion, four hundred thirty-one million, one hundred twenty-three thousand, one hundred fifty-five".