31485199471 has 16 divisors (see below), whose sum is σ = 35024508288. Its totient is φ = 28061791200.

The previous prime is 31485199441. The next prime is 31485199477. The reversal of 31485199471 is 17499158413.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31485199471 is a prime.

It is a super-3 number, since 3×31485199471³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31485199477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129576 + ... + 282418.

It is an arithmetic number, because the mean of its divisors is an integer number (2189031768).

Almost surely, 2^31485199471 is an apocalyptic number.

31485199471 is a deficient number, since it is larger than the sum of its proper divisors (3539308817).

31485199471 is a wasteful number, since it uses less digits than its factorization.

31485199471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153222.

The product of its digits is 1088640, while the sum is 52.

The spelling of 31485199471 in words is "thirty-one billion, four hundred eighty-five million, one hundred ninety-nine thousand, four hundred seventy-one".