31031302144 has 24 divisors (see below), whose sum is σ = 62047456380. Its totient is φ = 15515650048.

The previous prime is 31031302123. The next prime is 31031302171. The reversal of 31031302144 is 44120313013.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7573954 + ... + 7578049.

Almost surely, 2^31031302144 is an apocalyptic number.

It is an amenable number.

31031302144 is a deficient number, since it is larger than the sum of its proper divisors (31016154236).

31031302144 is an equidigital number, since it uses as much as digits as its factorization.

31031302144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15152025 (or 15152005 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 31031302144 its reverse (44120313013), we get a palindrome (75151615157).

The spelling of 31031302144 in words is "thirty-one billion, thirty-one million, three hundred two thousand, one hundred forty-four".