31143122402243 has 8 divisors (see below), whose sum is σ = 31172288348160. Its totient is φ = 31113957405960.

The previous prime is 31143122402179. The next prime is 31143122402309. The reversal of 31143122402243 is 34220422134113.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 31143122402243 - 2⁶ = 31143122402179 is a prime.

It is a super-2 number, since 2×31143122402243² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31143122402443) 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, 77161598 + ... + 77564156.

It is an arithmetic number, because the mean of its divisors is an integer number (3896536043520).

Almost surely, 2^{31143122402243} is an apocalyptic number.

31143122402243 is a deficient number, since it is larger than the sum of its proper divisors (29165945917).

31143122402243 is a wasteful number, since it uses less digits than its factorization.

31143122402243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474817.

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 31143122402243 its reverse (34220422134113), we get a palindrome (65363544536356).

The spelling of 31143122402243 in words is "thirty-one trillion, one hundred forty-three billion, one hundred twenty-two million, four hundred two thousand, two hundred forty-three".