145175831 has 2 divisors, whose sum is σ = 145175832. Its totient is φ = 145175830.

The previous prime is 145175819. The next prime is 145175837. The reversal of 145175831 is 138571541.

145175831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145175831 - 2¹⁰ = 145174807 is a prime.

It is a super-2 number, since 2×145175831² = 42152043813081122, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 145175791 and 145175800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145175837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72587915 + 72587916.

It is an arithmetic number, because the mean of its divisors is an integer number (72587916).

Almost surely, 2^145175831 is an apocalyptic number.

145175831 is a deficient number, since it is larger than the sum of its proper divisors (1).

145175831 is an equidigital number, since it uses as much as digits as its factorization.

145175831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16800, while the sum is 35.

The square root of 145175831 is about 12048.8933516734. The cubic root of 145175831 is about 525.5710563240.

The spelling of 145175831 in words is "one hundred forty-five million, one hundred seventy-five thousand, eight hundred thirty-one".