31031420344 has 8 divisors (see below), whose sum is σ = 58183913160. Its totient is φ = 15515710168.

The previous prime is 31031420317. The next prime is 31031420401. The reversal of 31031420344 is 44302413013.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1939463764 + ... + 1939463779.

It is an arithmetic number, because the mean of its divisors is an integer number (7272989145).

Almost surely, 2^31031420344 is an apocalyptic number.

It is an amenable number.

31031420344 is a deficient number, since it is larger than the sum of its proper divisors (27152492816).

31031420344 is a wasteful number, since it uses less digits than its factorization.

31031420344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3878927549 (or 3878927545 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 31031420344 its reverse (44302413013), we get a palindrome (75333833357).

The spelling of 31031420344 in words is "thirty-one billion, thirty-one million, four hundred twenty thousand, three hundred forty-four".