2123401131 has 6 divisors (see below), whose sum is σ = 3067134980. Its totient is φ = 1415600748.

The previous prime is 2123401127. The next prime is 2123401153. The reversal of 2123401131 is 1311043212.

2123401131 is a `hidden beast` number, since 212 + 340 + 113 + 1 = 666.

It is not a de Polignac number, because 2123401131 - 2² = 2123401127 is a prime.

It is a super-2 number, since 2×2123401131² = 9017664726264158322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2123401121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 117966721 + ... + 117966738.

Almost surely, 2^2123401131 is an apocalyptic number.

2123401131 is a deficient number, since it is larger than the sum of its proper divisors (943733849).

2123401131 is a wasteful number, since it uses less digits than its factorization.

2123401131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235933465 (or 235933462 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 2123401131 is about 46080.3768539277. The cubic root of 2123401131 is about 1285.3182718826.

Adding to 2123401131 its reverse (1311043212), we get a palindrome (3434444343).

The spelling of 2123401131 in words is "two billion, one hundred twenty-three million, four hundred one thousand, one hundred thirty-one".