1203240131 has 4 divisors (see below), whose sum is σ = 1244731200. Its totient is φ = 1161749064.

The previous prime is 1203240119. The next prime is 1203240133. The reversal of 1203240131 is 1310423021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1310423021 = 179 ⋅7320799.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1203240131 is a prime.

It is a super-2 number, since 2×1203240131² = 2895573625697794322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1203240133) 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, 20745491 + ... + 20745548.

It is an arithmetic number, because the mean of its divisors is an integer number (311182800).

Almost surely, 2^1203240131 is an apocalyptic number.

1203240131 is a deficient number, since it is larger than the sum of its proper divisors (41491069).

1203240131 is an equidigital number, since it uses as much as digits as its factorization.

1203240131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41491068.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1203240131 is about 34687.7518873737. The cubic root of 1203240131 is about 1063.6141410298.

Adding to 1203240131 its reverse (1310423021), we get a palindrome (2513663152).

The spelling of 1203240131 in words is "one billion, two hundred three million, two hundred forty thousand, one hundred thirty-one".