51031044340 has 24 divisors (see below), whose sum is σ = 107546575752. Its totient is φ = 20339773440.

The previous prime is 51031044331. The next prime is 51031044349. The reversal of 51031044340 is 4344013015.

It is an interprime number because it is at equal distance from previous prime (51031044331) and next prime (51031044349).

It can be written as a sum of positive squares in 4 ways, for example, as 10868479504 + 40162564836 = 104252^2 + 200406^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51031044349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4534509 + ... + 4545748.

It is an arithmetic number, because the mean of its divisors is an integer number (4481107323).

Almost surely, 2^51031044340 is an apocalyptic number.

It is an amenable number.

51031044340 is an abundant number, since it is smaller than the sum of its proper divisors (56515531412).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51031044340 is a wasteful number, since it uses less digits than its factorization.

51031044340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9080547 (or 9080545 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 51031044340 its reverse (4344013015), we get a palindrome (55375057355).

The spelling of 51031044340 in words is "fifty-one billion, thirty-one million, forty-four thousand, three hundred forty".