145660831 has 8 divisors (see below), whose sum is σ = 147926304. Its totient is φ = 143401440.

The previous prime is 145660829. The next prime is 145660841. The reversal of 145660831 is 138066541.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 145660831 - 2¹ = 145660829 is a prime.

It is a super-2 number, since 2×145660831² = 42434155375221122, 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 (145660841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76665 + ... + 78541.

It is an arithmetic number, because the mean of its divisors is an integer number (18490788).

Almost surely, 2^145660831 is an apocalyptic number.

145660831 is a deficient number, since it is larger than the sum of its proper divisors (2265473).

145660831 is a wasteful number, since it uses less digits than its factorization.

145660831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3041.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 145660831 is about 12069.0028999914. The cubic root of 145660831 is about 526.1556775827.

The spelling of 145660831 in words is "one hundred forty-five million, six hundred sixty thousand, eight hundred thirty-one".