31315017470 has 64 divisors (see below), whose sum is σ = 62120604672. Its totient is φ = 11271312000.

The previous prime is 31315017463. The next prime is 31315017473. The reversal of 31315017470 is 7471051313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31315017473) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4676825 + ... + 4683515.

It is an arithmetic number, because the mean of its divisors is an integer number (970634448).

Almost surely, 2^31315017470 is an apocalyptic number.

31315017470 is a deficient number, since it is larger than the sum of its proper divisors (30805587202).

31315017470 is a wasteful number, since it uses less digits than its factorization.

31315017470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7137.

The product of its (nonzero) digits is 8820, while the sum is 32.

Adding to 31315017470 its reverse (7471051313), we get a palindrome (38786068783).

The spelling of 31315017470 in words is "thirty-one billion, three hundred fifteen million, seventeen thousand, four hundred seventy".