31443103352540 has 48 divisors (see below), whose sum is σ = 72110168301024. Its totient is φ = 11421653068800.

The previous prime is 31443103352489. The next prime is 31443103352567. The reversal of 31443103352540 is 4525330134413.

It is a junction number, because it is equal to n+sod(n) for n = 31443103352494 and 31443103352503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76060241 + ... + 76472520.

It is an arithmetic number, because the mean of its divisors is an integer number (1502295172938).

Almost surely, 2^{31443103352540} is an apocalyptic number.

It is an amenable number.

31443103352540 is an abundant number, since it is smaller than the sum of its proper divisors (40667064948484).

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

31443103352540 is a wasteful number, since it uses less digits than its factorization.

31443103352540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152533718 (or 152533716 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 38.

Adding to 31443103352540 its reverse (4525330134413), we get a palindrome (35968433486953).

The spelling of 31443103352540 in words is "thirty-one trillion, four hundred forty-three billion, one hundred three million, three hundred fifty-two thousand, five hundred forty".