151505741171231 has 4 divisors (see below), whose sum is σ = 153331111546872. Its totient is φ = 149680370795592.

The previous prime is 151505741171131. The next prime is 151505741171233. The reversal of 151505741171231 is 132171147505151.

It is a happy number.

151505741171231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 151505741171231 - 2¹⁰ = 151505741170207 is a prime.

It is a super-2 number, since 2×151505741171231² (a number of 29 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 (151505741171233) 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, 912685187696 + ... + 912685187861.

It is an arithmetic number, because the mean of its divisors is an integer number (38332777886718).

Almost surely, 2^{151505741171231} is an apocalyptic number.

151505741171231 is a deficient number, since it is larger than the sum of its proper divisors (1825370375641).

151505741171231 is an equidigital number, since it uses as much as digits as its factorization.

151505741171231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1825370375640.

The product of its (nonzero) digits is 147000, while the sum is 44.

Adding to 151505741171231 its reverse (132171147505151), we get a palindrome (283676888676382).

The spelling of 151505741171231 in words is "one hundred fifty-one trillion, five hundred five billion, seven hundred forty-one million, one hundred seventy-one thousand, two hundred thirty-one".