31143040321234 has 16 divisors (see below), whose sum is σ = 48976650279360. Its totient is φ = 14823907504560.

The previous prime is 31143040321231. The next prime is 31143040321243. The reversal of 31143040321234 is 43212304034113.

It is a super-2 number, since 2×31143040321234² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31143040321196 and 31143040321205.

It is not an unprimeable number, because it can be changed into a prime (31143040321231) 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, 1604309289 + ... + 1604328700.

It is an arithmetic number, because the mean of its divisors is an integer number (3061040642460).

Almost surely, 2^{31143040321234} is an apocalyptic number.

31143040321234 is a deficient number, since it is larger than the sum of its proper divisors (17833609958126).

31143040321234 is a wasteful number, since it uses less digits than its factorization.

31143040321234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3208638225.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 31143040321234 its reverse (43212304034113), we get a palindrome (74355344355347).

The spelling of 31143040321234 in words is "thirty-one trillion, one hundred forty-three billion, forty million, three hundred twenty-one thousand, two hundred thirty-four".