31400061406 has 32 divisors (see below), whose sum is σ = 55016865792. Its totient is φ = 13163109120.

The previous prime is 31400061401. The next prime is 31400061443. The reversal of 31400061406 is 60416000413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31400061401) by changing a digit.

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, 1870 + ... + 250606.

It is an arithmetic number, because the mean of its divisors is an integer number (1719277056).

Almost surely, 2^31400061406 is an apocalyptic number.

31400061406 is a deficient number, since it is larger than the sum of its proper divisors (23616804386).

31400061406 is a wasteful number, since it uses less digits than its factorization.

31400061406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248944.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 31400061406 its reverse (60416000413), we get a palindrome (91816061819).

The spelling of 31400061406 in words is "thirty-one billion, four hundred million, sixty-one thousand, four hundred six".