31040213052542 has 8 divisors (see below), whose sum is σ = 49010862714600. Its totient is φ = 14703258814344.

The previous prime is 31040213052529. The next prime is 31040213052547. The reversal of 31040213052542 is 24525031204013.

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

It is a junction number, because it is equal to n+sod(n) for n = 31040213052499 and 31040213052508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31040213052547) 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, 408423855917 + ... + 408423855992.

It is an arithmetic number, because the mean of its divisors is an integer number (6126357839325).

Almost surely, 2^{31040213052542} is an apocalyptic number.

31040213052542 is a deficient number, since it is larger than the sum of its proper divisors (17970649662058).

31040213052542 is a wasteful number, since it uses less digits than its factorization.

31040213052542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816847711930.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 31040213052542 its reverse (24525031204013), we get a palindrome (55565244256555).

The spelling of 31040213052542 in words is "thirty-one trillion, forty billion, two hundred thirteen million, fifty-two thousand, five hundred forty-two".