31243300203340 has 12 divisors (see below), whose sum is σ = 65610930427056. Its totient is φ = 12497320081328.

The previous prime is 31243300203337. The next prime is 31243300203343. The reversal of 31243300203340 is 4330200334213.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (31243300203337) and next prime (31243300203343).

It is a super-2 number, since 2×31243300203340² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31243300203299 and 31243300203308.

It is not an unprimeable number, because it can be changed into a prime (31243300203343) 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, 781082505064 + ... + 781082505103.

It is an arithmetic number, because the mean of its divisors is an integer number (5467577535588).

Almost surely, 2^{31243300203340} is an apocalyptic number.

It is an amenable number.

31243300203340 is an abundant number, since it is smaller than the sum of its proper divisors (34367630223716).

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

31243300203340 is a wasteful number, since it uses less digits than its factorization.

31243300203340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1562165010176 (or 1562165010174 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 28.

Adding to 31243300203340 its reverse (4330200334213), we get a palindrome (35573500537553).

The spelling of 31243300203340 in words is "thirty-one trillion, two hundred forty-three billion, three hundred million, two hundred three thousand, three hundred forty".