1420311131 has 4 divisors (see below), whose sum is σ = 1421606952. Its totient is φ = 1419015312.

The previous prime is 1420311127. The next prime is 1420311149. The reversal of 1420311131 is 1311130241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1311130241 = 31357 ⋅41813.

It is a cyclic number.

It is not a de Polignac number, because 1420311131 - 2² = 1420311127 is a prime.

It is a super-2 number, since 2×1420311131² = 4034567417684998322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1420311181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 646265 + ... + 648458.

It is an arithmetic number, because the mean of its divisors is an integer number (355401738).

Almost surely, 2^1420311131 is an apocalyptic number.

1420311131 is a deficient number, since it is larger than the sum of its proper divisors (1295821).

1420311131 is a wasteful number, since it uses less digits than its factorization.

1420311131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295820.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1420311131 is about 37687.0154164534. The cubic root of 1420311131 is about 1124.0729497935.

Adding to 1420311131 its reverse (1311130241), we get a palindrome (2731441372).

The spelling of 1420311131 in words is "one billion, four hundred twenty million, three hundred eleven thousand, one hundred thirty-one".