145222313131 has 8 divisors (see below), whose sum is σ = 165971531520. Its totient is φ = 124473888168.

The previous prime is 145222313107. The next prime is 145222313149. The reversal of 145222313131 is 131313222541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 145222313131 - 2⁹ = 145222312619 is a prime.

It is a super-2 number, since 2×145222313131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145222313131.

It is not an unprimeable number, because it can be changed into a prime (145222313531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266490 + ... + 601216.

It is an arithmetic number, because the mean of its divisors is an integer number (20746441440).

Almost surely, 2^145222313131 is an apocalyptic number.

145222313131 is a deficient number, since it is larger than the sum of its proper divisors (20749218389).

145222313131 is an equidigital number, since it uses as much as digits as its factorization.

145222313131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396713.

The product of its digits is 4320, while the sum is 28.

Adding to 145222313131 its reverse (131313222541), we get a palindrome (276535535672).

The spelling of 145222313131 in words is "one hundred forty-five billion, two hundred twenty-two million, three hundred thirteen thousand, one hundred thirty-one".