145441831 has 2 divisors, whose sum is σ = 145441832. Its totient is φ = 145441830.

The previous prime is 145441787. The next prime is 145441847. The reversal of 145441831 is 138144541.

It is a strong prime.

It is an emirp because it is prime and its reverse (138144541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145441831 - 2⁹ = 145441319 is a prime.

It is a super-2 number, since 2×145441831² = 42306652409265122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145441793 and 145441802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145441031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72720915 + 72720916.

It is an arithmetic number, because the mean of its divisors is an integer number (72720916).

Almost surely, 2^145441831 is an apocalyptic number.

145441831 is a deficient number, since it is larger than the sum of its proper divisors (1).

145441831 is an equidigital number, since it uses as much as digits as its factorization.

145441831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7680, while the sum is 31.

The square root of 145441831 is about 12059.9266581518. The cubic root of 145441831 is about 525.8918549085.

The spelling of 145441831 in words is "one hundred forty-five million, four hundred forty-one thousand, eight hundred thirty-one".