146321531531 has 8 divisors (see below), whose sum is σ = 167557065984. Its totient is φ = 125169111720.

The previous prime is 146321531507. The next prime is 146321531533. The reversal of 146321531531 is 135135123641.

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

It is a cyclic number.

It is not a de Polignac number, because 146321531531 - 2¹⁰ = 146321530507 is a prime.

It is a super-2 number, since 2×146321531531² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 146321531491 and 146321531500.

It is not an unprimeable number, because it can be changed into a prime (146321531533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20774885 + ... + 20781926.

It is an arithmetic number, because the mean of its divisors is an integer number (20944633248).

Almost surely, 2^146321531531 is an apocalyptic number.

146321531531 is a deficient number, since it is larger than the sum of its proper divisors (21235534453).

146321531531 is an equidigital number, since it uses as much as digits as its factorization.

146321531531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41557321.

The product of its digits is 32400, while the sum is 35.

The spelling of 146321531531 in words is "one hundred forty-six billion, three hundred twenty-one million, five hundred thirty-one thousand, five hundred thirty-one".