1064631931 has 24 divisors (see below), whose sum is σ = 1197670320. Its totient is φ = 945362880.

The previous prime is 1064631907. The next prime is 1064631937. The reversal of 1064631931 is 1391364601.

It is a happy number.

It is not a de Polignac number, because 1064631931 - 2¹⁵ = 1064599163 is a prime.

It is a super-2 number, since 2×1064631931² = 2266882297009577522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1064631937) 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 23 ways as a sum of consecutive naturals, for example, 1406005 + ... + 1406761.

It is an arithmetic number, because the mean of its divisors is an integer number (49902930).

Almost surely, 2^1064631931 is an apocalyptic number.

1064631931 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1064631931 is a deficient number, since it is larger than the sum of its proper divisors (133038389).

1064631931 is a wasteful number, since it uses less digits than its factorization.

1064631931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035 (or 1024 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 1064631931 is about 32628.6979666673. The cubic root of 1064631931 is about 1021.0958141771.

The spelling of 1064631931 in words is "one billion, sixty-four million, six hundred thirty-one thousand, nine hundred thirty-one".