31006450406 has 16 divisors (see below), whose sum is σ = 48193728000. Its totient is φ = 14951002248.

The previous prime is 31006450403. The next prime is 31006450411. The reversal of 31006450406 is 60405460013.

It is a happy number.

It is a super-2 number, since 2×31006450406² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31006450403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2275106 + ... + 2288693.

It is an arithmetic number, because the mean of its divisors is an integer number (3012108000).

Almost surely, 2^31006450406 is an apocalyptic number.

31006450406 is a deficient number, since it is larger than the sum of its proper divisors (17187277594).

31006450406 is a wasteful number, since it uses less digits than its factorization.

31006450406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4563923.

The product of its (nonzero) digits is 8640, while the sum is 29.

The spelling of 31006450406 in words is "thirty-one billion, six million, four hundred fifty thousand, four hundred six".