31425316305545 has 16 divisors (see below), whose sum is σ = 38355045505920. Its totient is φ = 24710598129024.

The previous prime is 31425316305527. The next prime is 31425316305553. The reversal of 31425316305545 is 54550361352413.

It is a cyclic number.

It is not a de Polignac number, because 31425316305545 - 2¹⁶ = 31425316240009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31425316305545.

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, 5589812 + ... + 9700341.

It is an arithmetic number, because the mean of its divisors is an integer number (2397190344120).

Almost surely, 2^{31425316305545} is an apocalyptic number.

It is an amenable number.

31425316305545 is a deficient number, since it is larger than the sum of its proper divisors (6929729200375).

31425316305545 is a wasteful number, since it uses less digits than its factorization.

31425316305545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15297184.

The product of its (nonzero) digits is 3240000, while the sum is 47.

Adding to 31425316305545 its reverse (54550361352413), we get a palindrome (85975677657958).

The spelling of 31425316305545 in words is "thirty-one trillion, four hundred twenty-five billion, three hundred sixteen million, three hundred five thousand, five hundred forty-five".