31405454066 has 12 divisors (see below), whose sum is σ = 54799312878. Its totient is φ = 13459480272.

The previous prime is 31405454021. The next prime is 31405454083. The reversal of 31405454066 is 66045450413.

It can be written as a sum of positive squares in only one way, i.e., 21598711225 + 9806742841 = 146965^2 + 99029^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 160231811 + ... + 160232006.

Almost surely, 2^31405454066 is an apocalyptic number.

31405454066 is a deficient number, since it is larger than the sum of its proper divisors (23393858812).

31405454066 is a wasteful number, since it uses less digits than its factorization.

31405454066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320463833 (or 320463826 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 38.

The spelling of 31405454066 in words is "thirty-one billion, four hundred five million, four hundred fifty-four thousand, sixty-six".