31420472005016 has 32 divisors (see below), whose sum is σ = 59375479751280. Its totient is φ = 15587060736000.

The previous prime is 31420472005007. The next prime is 31420472005037. The reversal of 31420472005016 is 61050027402413.

It is a super-2 number, since 2×31420472005016² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1909040 + ... + 8153856.

Almost surely, 2^{31420472005016} is an apocalyptic number.

It is an amenable number.

31420472005016 is a deficient number, since it is larger than the sum of its proper divisors (27955007746264).

31420472005016 is a wasteful number, since it uses less digits than its factorization.

31420472005016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6249755 (or 6249751 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

Adding to 31420472005016 its reverse (61050027402413), we get a palindrome (92470499407429).

The spelling of 31420472005016 in words is "thirty-one trillion, four hundred twenty billion, four hundred seventy-two million, five thousand, sixteen".