31406106556 has 48 divisors (see below), whose sum is σ = 60214492800. Its totient is φ = 14214352320.

The previous prime is 31406106547. The next prime is 31406106593. The reversal of 31406106556 is 65560160413.

It is a super-2 number, since 2×31406106556² (a number of 22 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 (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18226711 + ... + 18228433.

It is an arithmetic number, because the mean of its divisors is an integer number (1254468600).

Almost surely, 2^31406106556 is an apocalyptic number.

It is an amenable number.

31406106556 is a deficient number, since it is larger than the sum of its proper divisors (28808386244).

31406106556 is a wasteful number, since it uses less digits than its factorization.

31406106556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3274 (or 3272 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

Adding to 31406106556 its reverse (65560160413), we get a palindrome (96966266969).

The spelling of 31406106556 in words is "thirty-one billion, four hundred six million, one hundred six thousand, five hundred fifty-six".