1423551131 has 4 divisors (see below), whose sum is σ = 1423992264. Its totient is φ = 1423110000.

The previous prime is 1423551113. The next prime is 1423551169. The reversal of 1423551131 is 1311553241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1311553241 = 691 ⋅1898051.

It is a cyclic number.

It is not a de Polignac number, because 1423551131 - 2⁶ = 1423551067 is a prime.

It is a super-2 number, since 2×1423551131² = 4052995645142758322, 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 1423551131.

It is not an unprimeable number, because it can be changed into a prime (1423551331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215690 + ... + 222191.

It is an arithmetic number, because the mean of its divisors is an integer number (355998066).

Almost surely, 2^1423551131 is an apocalyptic number.

1423551131 is a deficient number, since it is larger than the sum of its proper divisors (441133).

1423551131 is an equidigital number, since it uses as much as digits as its factorization.

1423551131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441132.

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

The square root of 1423551131 is about 37729.9765571091. The cubic root of 1423551131 is about 1124.9270421164.

The spelling of 1423551131 in words is "one billion, four hundred twenty-three million, five hundred fifty-one thousand, one hundred thirty-one".