146405031 has 4 divisors (see below), whose sum is σ = 195206712. Its totient is φ = 97603352.

The previous prime is 146405029. The next prime is 146405057. The reversal of 146405031 is 130504641.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130504641 = 3 ⋅43501547.

It is a cyclic number.

It is not a de Polignac number, because 146405031 - 2¹ = 146405029 is a prime.

It is a super-2 number, since 2×146405031² = 42868866204221922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 146404992 and 146405010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146405011) 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 3 ways as a sum of consecutive naturals, for example, 24400836 + ... + 24400841.

It is an arithmetic number, because the mean of its divisors is an integer number (48801678).

Almost surely, 2^146405031 is an apocalyptic number.

146405031 is a deficient number, since it is larger than the sum of its proper divisors (48801681).

146405031 is an equidigital number, since it uses as much as digits as its factorization.

146405031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48801680.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 146405031 is about 12099.7946676793. The cubic root of 146405031 is about 527.0502216336.

Adding to 146405031 its reverse (130504641), we get a palindrome (276909672).

The spelling of 146405031 in words is "one hundred forty-six million, four hundred five thousand, thirty-one".