151212040231 has 4 divisors (see below), whose sum is σ = 172813760272. Its totient is φ = 129610320192.

The previous prime is 151212040229. The next prime is 151212040237. The reversal of 151212040231 is 132040212151.

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 151212040231 - 2¹ = 151212040229 is a prime.

It is a super-2 number, since 2×151212040231² (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 (151212040237) 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, 10800860010 + ... + 10800860023.

It is an arithmetic number, because the mean of its divisors is an integer number (43203440068).

Almost surely, 2^151212040231 is an apocalyptic number.

151212040231 is a deficient number, since it is larger than the sum of its proper divisors (21601720041).

151212040231 is an equidigital number, since it uses as much as digits as its factorization.

151212040231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21601720040.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 151212040231 its reverse (132040212151), we get a palindrome (283252252382).

The spelling of 151212040231 in words is "one hundred fifty-one billion, two hundred twelve million, forty thousand, two hundred thirty-one".