145246131 has 24 divisors (see below), whose sum is σ = 217142640. Its totient is φ = 93494016.

The previous prime is 145246093. The next prime is 145246133. The reversal of 145246131 is 131642541.

It is a happy number.

145246131 is a `hidden beast` number, since 1 + 4 + 524 + 6 + 131 = 666.

It is not a de Polignac number, because 145246131 - 2¹⁷ = 145115059 is a prime.

It is a super-2 number, since 2×145246131² = 42192877140938322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145246095 and 145246104.

It is not an unprimeable number, because it can be changed into a prime (145246133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32335 + ... + 36551.

It is an arithmetic number, because the mean of its divisors is an integer number (9047610).

Almost surely, 2^145246131 is an apocalyptic number.

145246131 is a deficient number, since it is larger than the sum of its proper divisors (71896509).

145246131 is a wasteful number, since it uses less digits than its factorization.

145246131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4355 (or 4352 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 145246131 is about 12051.8102789581. The cubic root of 145246131 is about 525.6558768775.

Adding to 145246131 its reverse (131642541), we get a palindrome (276888672).

The spelling of 145246131 in words is "one hundred forty-five million, two hundred forty-six thousand, one hundred thirty-one".