31543154130242 has 16 divisors (see below), whose sum is σ = 48207973271040. Its totient is φ = 15473836018992.

The previous prime is 31543154130211. The next prime is 31543154130263. The reversal of 31543154130242 is 24203145134513.

It is a junction number, because it is equal to n+sod(n) for n = 31543154130196 and 31543154130205.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8782559 + ... + 11841437.

It is an arithmetic number, because the mean of its divisors is an integer number (3012998329440).

Almost surely, 2^{31543154130242} is an apocalyptic number.

31543154130242 is a deficient number, since it is larger than the sum of its proper divisors (16664819140798).

31543154130242 is a wasteful number, since it uses less digits than its factorization.

31543154130242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3156217.

The product of its (nonzero) digits is 172800, while the sum is 38.

Adding to 31543154130242 its reverse (24203145134513), we get a palindrome (55746299264755).

The spelling of 31543154130242 in words is "thirty-one trillion, five hundred forty-three billion, one hundred fifty-four million, one hundred thirty thousand, two hundred forty-two".