51231323002 has 8 divisors (see below), whose sum is σ = 77249325312. Its totient is φ = 25481547900.

The previous prime is 51231322957. The next prime is 51231323009. The reversal of 51231323002 is 20032313215.

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

It is not an unprimeable number, because it can be changed into a prime (51231323009) 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, 67056324 + ... + 67057087.

It is an arithmetic number, because the mean of its divisors is an integer number (9656165664).

Almost surely, 2^51231323002 is an apocalyptic number.

51231323002 is a deficient number, since it is larger than the sum of its proper divisors (26018002310).

51231323002 is a wasteful number, since it uses less digits than its factorization.

51231323002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134113604.

The product of its (nonzero) digits is 1080, while the sum is 22.

Adding to 51231323002 its reverse (20032313215), we get a palindrome (71263636217).

The spelling of 51231323002 in words is "fifty-one billion, two hundred thirty-one million, three hundred twenty-three thousand, two".