151530321431 has 4 divisors (see below), whose sum is σ = 152495482872. Its totient is φ = 150565159992.

The previous prime is 151530321403. The next prime is 151530321433. The reversal of 151530321431 is 134123035151.

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 151530321431 - 2¹⁰ = 151530320407 is a prime.

It is a super-2 number, since 2×151530321431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 151530321394 and 151530321403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151530321433) 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, 482580485 + ... + 482580798.

It is an arithmetic number, because the mean of its divisors is an integer number (38123870718).

Almost surely, 2^151530321431 is an apocalyptic number.

151530321431 is a deficient number, since it is larger than the sum of its proper divisors (965161441).

151530321431 is an equidigital number, since it uses as much as digits as its factorization.

151530321431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 965161440.

The product of its (nonzero) digits is 5400, while the sum is 29.

Adding to 151530321431 its reverse (134123035151), we get a palindrome (285653356582).

The spelling of 151530321431 in words is "one hundred fifty-one billion, five hundred thirty million, three hundred twenty-one thousand, four hundred thirty-one".