145061131 has 4 divisors (see below), whose sum is σ = 145098352. Its totient is φ = 145023912.

The previous prime is 145061123. The next prime is 145061171. The reversal of 145061131 is 131160541.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 145061131 - 2³ = 145061123 is a prime.

It is a super-2 number, since 2×145061131² = 42085463453998322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145061101) 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 3 ways as a sum of consecutive naturals, for example, 11976 + ... + 20821.

It is an arithmetic number, because the mean of its divisors is an integer number (36274588).

Almost surely, 2^145061131 is an apocalyptic number.

145061131 is a deficient number, since it is larger than the sum of its proper divisors (37221).

145061131 is an equidigital number, since it uses as much as digits as its factorization.

145061131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37220.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 145061131 is about 12044.1326379279. The cubic root of 145061131 is about 525.4326060903.

The spelling of 145061131 in words is "one hundred forty-five million, sixty-one thousand, one hundred thirty-one".