151320423 has 4 divisors (see below), whose sum is σ = 201760568. Its totient is φ = 100880280.

The previous prime is 151320419. The next prime is 151320431. The reversal of 151320423 is 324023151.

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

It is not a de Polignac number, because 151320423 - 2² = 151320419 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 151320423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151320413) 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, 25220068 + ... + 25220073.

It is an arithmetic number, because the mean of its divisors is an integer number (50440142).

Almost surely, 2^151320423 is an apocalyptic number.

151320423 is a deficient number, since it is larger than the sum of its proper divisors (50440145).

151320423 is an equidigital number, since it uses as much as digits as its factorization.

151320423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50440144.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 151320423 is about 12301.2366451508. The cubic root of 151320423 is about 532.8837974604.

Adding to 151320423 its reverse (324023151), we get a palindrome (475343574).

The spelling of 151320423 in words is "one hundred fifty-one million, three hundred twenty thousand, four hundred twenty-three".