146431 has 4 divisors (see below), whose sum is σ = 147712. Its totient is φ = 145152.

The previous prime is 146423. The next prime is 146437. The reversal of 146431 is 134641.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134641 = 13 ⋅10357.

It is a cyclic number.

It is not a de Polignac number, because 146431 - 2³ = 146423 is a prime.

It is a super-2 number, since 2×146431² = 42884075522, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 146399 and 146408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 450 + ... + 703.

It is an arithmetic number, because the mean of its divisors is an integer number (36928).

2¹⁴⁶⁴³¹ is an apocalyptic number.

146431 is a deficient number, since it is larger than the sum of its proper divisors (1281).

146431 is a wasteful number, since it uses less digits than its factorization.

146431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1280.

The product of its digits is 288, while the sum is 19.

The square root of 146431 is about 382.6630371489. The cubic root of 146431 is about 52.7081382125.

It can be divided in two parts, 146 and 431, that multiplied together give a palindrome (62926).

The spelling of 146431 in words is "one hundred forty-six thousand, four hundred thirty-one".