145452031 has 4 divisors (see below), whose sum is σ = 150144064. Its totient is φ = 140760000.

The previous prime is 145451993. The next prime is 145452037. The reversal of 145452031 is 130254541.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 145452031 - 2²¹ = 143354879 is a prime.

It is a super-2 number, since 2×145452031² = 42312586644049922, 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 = 145451987 and 145452005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145452037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2345970 + ... + 2346031.

It is an arithmetic number, because the mean of its divisors is an integer number (37536016).

Almost surely, 2^145452031 is an apocalyptic number.

145452031 is a deficient number, since it is larger than the sum of its proper divisors (4692033).

145452031 is an equidigital number, since it uses as much as digits as its factorization.

145452031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4692032.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 145452031 is about 12060.3495388815. The cubic root of 145452031 is about 525.9041484178.

The spelling of 145452031 in words is "one hundred forty-five million, four hundred fifty-two thousand, thirty-one".