1231050355 has 4 divisors (see below), whose sum is σ = 1477260432. Its totient is φ = 984840280.

The previous prime is 1231050329. The next prime is 1231050371. The reversal of 1231050355 is 5530501321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5530501321 = 4751 ⋅1164071.

It is not a de Polignac number, because 1231050355 - 2¹¹ = 1231048307 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123105031 + ... + 123105040.

It is an arithmetic number, because the mean of its divisors is an integer number (369315108).

Almost surely, 2^1231050355 is an apocalyptic number.

1231050355 is a deficient number, since it is larger than the sum of its proper divisors (246210077).

1231050355 is an equidigital number, since it uses as much as digits as its factorization.

1231050355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246210076.

The product of its (nonzero) digits is 2250, while the sum is 25.

The square root of 1231050355 is about 35086.3271802564. The cubic root of 1231050355 is about 1071.7461676595.

Adding to 1231050355 its reverse (5530501321), we get a palindrome (6761551676).

The spelling of 1231050355 in words is "one billion, two hundred thirty-one million, fifty thousand, three hundred fifty-five".