35312131245640 has 64 divisors (see below), whose sum is σ = 84208357038960. Its totient is φ = 13280958013440.

The previous prime is 35312131245637. The next prime is 35312131245647. The reversal of 35312131245640 is 4654213121353.

It can be written as a sum of positive squares in 8 ways, for example, as 12610012919364 + 22702118326276 = 3551058^2 + 4764674^2 .

It is a super-2 number, since 2×35312131245640² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 35312131245593 and 35312131245602.

It is not an unprimeable number, because it can be changed into a prime (35312131245647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24736477 + ... + 26125036.

Almost surely, 2^{35312131245640} is an apocalyptic number.

It is an amenable number.

35312131245640 is an abundant number, since it is smaller than the sum of its proper divisors (48896225793320).

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

35312131245640 is a wasteful number, since it uses less digits than its factorization.

35312131245640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50862562 (or 50862558 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 40.

Adding to 35312131245640 its reverse (4654213121353), we get a palindrome (39966344366993).

The spelling of 35312131245640 in words is "thirty-five trillion, three hundred twelve billion, one hundred thirty-one million, two hundred forty-five thousand, six hundred forty".