1231403141 has 8 divisors (see below), whose sum is σ = 1287636480. Its totient is φ = 1175394352.

The previous prime is 1231403137. The next prime is 1231403161. The reversal of 1231403141 is 1413041321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1231403141 - 2² = 1231403137 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 (1231403161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44870 + ... + 66903.

It is an arithmetic number, because the mean of its divisors is an integer number (160954560).

Almost surely, 2^1231403141 is an apocalyptic number.

It is an amenable number.

1231403141 is a deficient number, since it is larger than the sum of its proper divisors (56233339).

1231403141 is a wasteful number, since it uses less digits than its factorization.

1231403141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112275.

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

The square root of 1231403141 is about 35091.3542200924. The cubic root of 1231403141 is about 1071.8485357796.

Adding to 1231403141 its reverse (1413041321), we get a palindrome (2644444462).

The spelling of 1231403141 in words is "one billion, two hundred thirty-one million, four hundred three thousand, one hundred forty-one".