145321673031 has 12 divisors (see below), whose sum is σ = 209914426800. Its totient is φ = 96878649120.

The previous prime is 145321673023. The next prime is 145321673041. The reversal of 145321673031 is 130376123541.

145321673031 is a `hidden beast` number, since 1 + 4 + 532 + 1 + 67 + 30 + 31 = 666.

It is not a de Polignac number, because 145321673031 - 2³ = 145321673023 is a prime.

It is a super-2 number, since 2×145321673031² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145321673011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 212395 + ... + 579443.

It is an arithmetic number, because the mean of its divisors is an integer number (17492868900).

Almost surely, 2^145321673031 is an apocalyptic number.

145321673031 is a deficient number, since it is larger than the sum of its proper divisors (64592753769).

145321673031 is a wasteful number, since it uses less digits than its factorization.

145321673031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411046 (or 411043 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

Adding to 145321673031 its reverse (130376123541), we get a palindrome (275697796572).

The spelling of 145321673031 in words is "one hundred forty-five billion, three hundred twenty-one million, six hundred seventy-three thousand, thirty-one".