145657131 has 8 divisors (see below), whose sum is σ = 194370000. Its totient is φ = 97024512.

The previous prime is 145657093. The next prime is 145657147. The reversal of 145657131 is 131756541.

145657131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 145657131 - 2¹⁰ = 145656107 is a prime.

It is a super-2 number, since 2×145657131² = 42431999622302322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145657092 and 145657101.

It is not an unprimeable number, because it can be changed into a prime (145657151) 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, 15690 + ... + 23183.

It is an arithmetic number, because the mean of its divisors is an integer number (24296250).

Almost surely, 2^145657131 is an apocalyptic number.

145657131 is a deficient number, since it is larger than the sum of its proper divisors (48712869).

145657131 is a wasteful number, since it uses less digits than its factorization.

145657131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40125.

The product of its digits is 12600, while the sum is 33.

The square root of 145657131 is about 12068.8496137784. The cubic root of 145657131 is about 526.1512225015.

The spelling of 145657131 in words is "one hundred forty-five million, six hundred fifty-seven thousand, one hundred thirty-one".