1241505131 has 4 divisors (see below), whose sum is σ = 1242276432. Its totient is φ = 1240733832.

The previous prime is 1241505113. The next prime is 1241505169. The reversal of 1241505131 is 1315051421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1315051421 = 71 ⋅18521851.

It is a cyclic number.

It is not a de Polignac number, because 1241505131 - 2³⁰ = 167763307 is a prime.

It is a super-2 number, since 2×1241505131² = 3082669980598654322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1241505097 and 1241505106.

It is not an unprimeable number, because it can be changed into a prime (1241505931) 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, 383231 + ... + 386456.

It is an arithmetic number, because the mean of its divisors is an integer number (310569108).

Almost surely, 2^1241505131 is an apocalyptic number.

1241505131 is a deficient number, since it is larger than the sum of its proper divisors (771301).

1241505131 is an equidigital number, since it uses as much as digits as its factorization.

1241505131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771300.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 1241505131 is about 35234.9986660990. The cubic root of 1241505131 is about 1074.7715774989.

Adding to 1241505131 its reverse (1315051421), we get a palindrome (2556556552).

The spelling of 1241505131 in words is "one billion, two hundred forty-one million, five hundred five thousand, one hundred thirty-one".