145542211331 has 8 divisors (see below), whose sum is σ = 158785766400. Its totient is φ = 132300730440.

The previous prime is 145542211307. The next prime is 145542211349. The reversal of 145542211331 is 133112245541.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145542211331 is a prime.

It is a super-2 number, since 2×145542211331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145542211531) 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, 369971 + ... + 654188.

It is an arithmetic number, because the mean of its divisors is an integer number (19848220800).

Almost surely, 2^145542211331 is an apocalyptic number.

145542211331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

145542211331 is a deficient number, since it is larger than the sum of its proper divisors (13243555069).

145542211331 is a wasteful number, since it uses less digits than its factorization.

145542211331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037089.

The product of its digits is 14400, while the sum is 32.

Adding to 145542211331 its reverse (133112245541), we get a palindrome (278654456872).

The spelling of 145542211331 in words is "one hundred forty-five billion, five hundred forty-two million, two hundred eleven thousand, three hundred thirty-one".