1231430141 has 4 divisors (see below), whose sum is σ = 1231665792. Its totient is φ = 1231194492.

The previous prime is 1231430129. The next prime is 1231430171. The reversal of 1231430141 is 1410341321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1231430141 - 2¹⁸ = 1231167997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231430171) 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, 109805 + ... + 120498.

It is an arithmetic number, because the mean of its divisors is an integer number (307916448).

Almost surely, 2^1231430141 is an apocalyptic number.

It is an amenable number.

1231430141 is a deficient number, since it is larger than the sum of its proper divisors (235651).

1231430141 is an equidigital number, since it uses as much as digits as its factorization.

1231430141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235650.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1231430141 is about 35091.7389281295. The cubic root of 1231430141 is about 1071.8563695799.

Adding to 1231430141 its reverse (1410341321), we get a palindrome (2641771462).

The spelling of 1231430141 in words is "one billion, two hundred thirty-one million, four hundred thirty thousand, one hundred forty-one".