146235431 has 4 divisors (see below), whose sum is σ = 147351864. Its totient is φ = 145119000.

The previous prime is 146235413. The next prime is 146235437. The reversal of 146235431 is 134532641.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134532641 = 179 ⋅751579.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-146235431 is a prime.

It is a super-2 number, since 2×146235431² = 42769602559511522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 146235394 and 146235403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146235437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 558020 + ... + 558281.

It is an arithmetic number, because the mean of its divisors is an integer number (36837966).

Almost surely, 2^146235431 is an apocalyptic number.

146235431 is a deficient number, since it is larger than the sum of its proper divisors (1116433).

146235431 is a wasteful number, since it uses less digits than its factorization.

146235431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1116432.

The product of its digits is 8640, while the sum is 29.

The square root of 146235431 is about 12092.7842534298. The cubic root of 146235431 is about 526.8466260429.

The spelling of 146235431 in words is "one hundred forty-six million, two hundred thirty-five thousand, four hundred thirty-one".