146451431 has 8 divisors (see below), whose sum is σ = 167660064. Its totient is φ = 125314560.

The previous prime is 146451391. The next prime is 146451457. The reversal of 146451431 is 134154641.

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

It is not a de Polignac number, because 146451431 - 2⁶ = 146451367 is a prime.

It is a super-2 number, since 2×146451431² = 42896043283895522, 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 = 146451394 and 146451403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146651431) 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, 13490 + ... + 21791.

It is an arithmetic number, because the mean of its divisors is an integer number (20957508).

Almost surely, 2^146451431 is an apocalyptic number.

146451431 is a deficient number, since it is larger than the sum of its proper divisors (21208633).

146451431 is an equidigital number, since it uses as much as digits as its factorization.

146451431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35881.

The product of its digits is 5760, while the sum is 29.

The square root of 146451431 is about 12101.7119036936. The cubic root of 146451431 is about 527.1058949190.

The spelling of 146451431 in words is "one hundred forty-six million, four hundred fifty-one thousand, four hundred thirty-one".