65131400431240 has 96 divisors (see below), whose sum is σ = 173111484614400. Its totient is φ = 21862288231680.

The previous prime is 65131400431219. The next prime is 65131400431259. The reversal of 65131400431240 is 4213400413156.

It is a junction number, because it is equal to n+sod(n) for n = 65131400431196 and 65131400431205.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 437872120 + ... + 438020839.

It is an arithmetic number, because the mean of its divisors is an integer number (1803244631400).

Almost surely, 2^{65131400431240} is an apocalyptic number.

It is an amenable number.

65131400431240 is an abundant number, since it is smaller than the sum of its proper divisors (107980084183160).

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

65131400431240 is a wasteful number, since it uses less digits than its factorization.

65131400431240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875893007 (or 875892990 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

Adding to 65131400431240 its reverse (4213400413156), we get a palindrome (69344800844396).

The spelling of 65131400431240 in words is "sixty-five trillion, one hundred thirty-one billion, four hundred million, four hundred thirty-one thousand, two hundred forty".