145474831 has 16 divisors (see below), whose sum is σ = 156619008. Its totient is φ = 134640000.

The previous prime is 145474829. The next prime is 145474837. The reversal of 145474831 is 138474541.

145474831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145474831 - 2¹ = 145474829 is a prime.

It is a super-2 number, since 2×145474831² = 42325852908957122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145474837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 439336 + ... + 439666.

It is an arithmetic number, because the mean of its divisors is an integer number (9788688).

Almost surely, 2^145474831 is an apocalyptic number.

145474831 is a deficient number, since it is larger than the sum of its proper divisors (11144177).

145474831 is a wasteful number, since it uses less digits than its factorization.

145474831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702.

The product of its digits is 53760, while the sum is 37.

The square root of 145474831 is about 12061.2947480774. The cubic root of 145474831 is about 525.9316259489.

The spelling of 145474831 in words is "one hundred forty-five million, four hundred seventy-four thousand, eight hundred thirty-one".