145168131 has 8 divisors (see below), whose sum is σ = 198788944. Its totient is φ = 94163040.

The previous prime is 145168123. The next prime is 145168139. The reversal of 145168131 is 131861541.

It is an interprime number because it is at equal distance from previous prime (145168123) and next prime (145168139).

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

It is not a de Polignac number, because 145168131 - 2³ = 145168123 is a prime.

It is a super-2 number, since 2×145168131² = 42147572516066322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145168139) 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, 653800 + ... + 654021.

It is an arithmetic number, because the mean of its divisors is an integer number (24848618).

Almost surely, 2^145168131 is an apocalyptic number.

145168131 is a deficient number, since it is larger than the sum of its proper divisors (53620813).

145168131 is a wasteful number, since it uses less digits than its factorization.

145168131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307861.

The product of its digits is 2880, while the sum is 30.

The square root of 145168131 is about 12048.5738160166. The cubic root of 145168131 is about 525.5617642156.

The spelling of 145168131 in words is "one hundred forty-five million, one hundred sixty-eight thousand, one hundred thirty-one".