1154421131 has 2 divisors, whose sum is σ = 1154421132. Its totient is φ = 1154421130.

The previous prime is 1154421061. The next prime is 1154421137. The reversal of 1154421131 is 1311244511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1154421131 - 2²⁶ = 1087312267 is a prime.

It is a super-2 number, since 2×1154421131² = 2665376295398638322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1154421097 and 1154421106.

It is not a weakly prime, because it can be changed into another prime (1154421137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577210565 + 577210566.

It is an arithmetic number, because the mean of its divisors is an integer number (577210566).

Almost surely, 2^1154421131 is an apocalyptic number.

1154421131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1154421131 is an equidigital number, since it uses as much as digits as its factorization.

1154421131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 480, while the sum is 23.

The square root of 1154421131 is about 33976.7734047835. The cubic root of 1154421131 is about 1049.0304371117.

Adding to 1154421131 its reverse (1311244511), we get a palindrome (2465665642).

The spelling of 1154421131 in words is "one billion, one hundred fifty-four million, four hundred twenty-one thousand, one hundred thirty-one".