145093331 has 4 divisors (see below), whose sum is σ = 147552600. Its totient is φ = 142634064.

The previous prime is 145093321. The next prime is 145093337. The reversal of 145093331 is 133390541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133390541 = 1151 ⋅115891.

It is a cyclic number.

It is not a de Polignac number, because 145093331 - 2¹⁴ = 145076947 is a prime.

It is a super-2 number, since 2×145093331² = 42104149401351122, 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 = 145093294 and 145093303.

It is not an unprimeable number, because it can be changed into a prime (145093337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1229546 + ... + 1229663.

It is an arithmetic number, because the mean of its divisors is an integer number (36888150).

Almost surely, 2^145093331 is an apocalyptic number.

145093331 is a deficient number, since it is larger than the sum of its proper divisors (2459269).

145093331 is an equidigital number, since it uses as much as digits as its factorization.

145093331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2459268.

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 145093331 is about 12045.4693142277. The cubic root of 145093331 is about 525.4714809152.

The spelling of 145093331 in words is "one hundred forty-five million, ninety-three thousand, three hundred thirty-one".