31428603146 has 8 divisors (see below), whose sum is σ = 47628914340. Its totient is φ = 15552298368.

The previous prime is 31428603113. The next prime is 31428603149. The reversal of 31428603146 is 64130682413.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 30219997921 + 1208605225 = 173839^2 + 34765^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×31428603146² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31428603149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81001361 + ... + 81001748.

Almost surely, 2^31428603146 is an apocalyptic number.

31428603146 is a deficient number, since it is larger than the sum of its proper divisors (16200311194).

31428603146 is a wasteful number, since it uses less digits than its factorization.

31428603146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162003208.

The product of its (nonzero) digits is 82944, while the sum is 38.

The spelling of 31428603146 in words is "thirty-one billion, four hundred twenty-eight million, six hundred three thousand, one hundred forty-six".