145313402233291 has 4 divisors (see below), whose sum is σ = 146275742645584. Its totient is φ = 144351061821000.

The previous prime is 145313402233271. The next prime is 145313402233309. The reversal of 145313402233291 is 192332204313541.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145313402233291 is a prime.

It is a super-2 number, since 2×145313402233291² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145313402233271) 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, 481170205920 + ... + 481170206221.

It is an arithmetic number, because the mean of its divisors is an integer number (36568935661396).

Almost surely, 2^{145313402233291} is an apocalyptic number.

145313402233291 is a deficient number, since it is larger than the sum of its proper divisors (962340412293).

145313402233291 is an equidigital number, since it uses as much as digits as its factorization.

145313402233291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962340412292.

The product of its (nonzero) digits is 466560, while the sum is 43.

The spelling of 145313402233291 in words is "one hundred forty-five trillion, three hundred thirteen billion, four hundred two million, two hundred thirty-three thousand, two hundred ninety-one".