145678831 has 12 divisors (see below), whose sum is σ = 155550760. Its totient is φ = 136402560.

The previous prime is 145678829. The next prime is 145678853. The reversal of 145678831 is 138876541.

It is not a de Polignac number, because 145678831 - 2¹ = 145678829 is a prime.

It is a super-2 number, since 2×145678831² = 42444643603053122, 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 (145678801) 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 11 ways as a sum of consecutive naturals, for example, 59785 + ... + 62173.

Almost surely, 2^145678831 is an apocalyptic number.

145678831 is a deficient number, since it is larger than the sum of its proper divisors (9871929).

145678831 is a wasteful number, since it uses less digits than its factorization.

145678831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2634 (or 2617 counting only the distinct ones).

The product of its digits is 161280, while the sum is 43.

The square root of 145678831 is about 12069.7485889309. The cubic root of 145678831 is about 526.1773498745.

It can be divided in two parts, 145 and 678831, that added together give a square (678976 = 824²).

The spelling of 145678831 in words is "one hundred forty-five million, six hundred seventy-eight thousand, eight hundred thirty-one".