145405131311 has 8 divisors (see below), whose sum is σ = 158628440448. Its totient is φ = 132182599000.

The previous prime is 145405131299. The next prime is 145405131329. The reversal of 145405131311 is 113131504541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145405131311 - 2²² = 145400937007 is a prime.

It is a super-2 number, since 2×145405131311² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145405131341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239246 + ... + 589956.

It is an arithmetic number, because the mean of its divisors is an integer number (19828555056).

Almost surely, 2^145405131311 is an apocalyptic number.

145405131311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

145405131311 is a deficient number, since it is larger than the sum of its proper divisors (13223309137).

145405131311 is a wasteful number, since it uses less digits than its factorization.

145405131311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388413.

The product of its (nonzero) digits is 3600, while the sum is 29.

Adding to 145405131311 its reverse (113131504541), we get a palindrome (258536635852).

The spelling of 145405131311 in words is "one hundred forty-five billion, four hundred five million, one hundred thirty-one thousand, three hundred eleven".