31053154640 has 160 divisors (see below), whose sum is σ = 78208149120. Its totient is φ = 11430346752.

The previous prime is 31053154637. The next prime is 31053154667. The reversal of 31053154640 is 4645135013.

It is a junction number, because it is equal to n+sod(n) for n = 31053154597 and 31053154606.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7432232 + ... + 7436408.

It is an arithmetic number, because the mean of its divisors is an integer number (488800932).

Almost surely, 2^31053154640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31053154640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39104074560).

31053154640 is an abundant number, since it is smaller than the sum of its proper divisors (47154994480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31053154640 is a wasteful number, since it uses less digits than its factorization.

31053154640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4349 (or 4343 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 32.

Adding to 31053154640 its reverse (4645135013), we get a palindrome (35698289653).

The spelling of 31053154640 in words is "thirty-one billion, fifty-three million, one hundred fifty-four thousand, six hundred forty".