131022145 has 32 divisors (see below), whose sum is σ = 179781120. Its totient is φ = 91069440.

The previous prime is 131022137. The next prime is 131022163. The reversal of 131022145 is 541220131.

It is not a de Polignac number, because 131022145 - 2³ = 131022137 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55540 + ... + 57850.

It is an arithmetic number, because the mean of its divisors is an integer number (5618160).

Almost surely, 2^131022145 is an apocalyptic number.

It is an amenable number.

131022145 is a deficient number, since it is larger than the sum of its proper divisors (48758975).

131022145 is a wasteful number, since it uses less digits than its factorization.

131022145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2385.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 131022145 is about 11446.4905101957. The cubic root of 131022145 is about 507.9039242637.

Adding to 131022145 its reverse (541220131), we get a palindrome (672242276).

The spelling of 131022145 in words is "one hundred thirty-one million, twenty-two thousand, one hundred forty-five".