31503454155452 has 6 divisors (see below), whose sum is σ = 55131044772048. Its totient is φ = 15751727077724.

The previous prime is 31503454155421. The next prime is 31503454155463. The reversal of 31503454155452 is 25455145430513.

It is a junction number, because it is equal to n+sod(n) for n = 31503454155397 and 31503454155406.

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, 3937931769428 + ... + 3937931769435.

It is an arithmetic number, because the mean of its divisors is an integer number (9188507462008).

Almost surely, 2^{31503454155452} is an apocalyptic number.

It is an amenable number.

31503454155452 is a deficient number, since it is larger than the sum of its proper divisors (23627590616596).

31503454155452 is a wasteful number, since it uses less digits than its factorization.

31503454155452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7875863538867 (or 7875863538865 counting only the distinct ones).

The product of its (nonzero) digits is 3600000, while the sum is 47.

Adding to 31503454155452 its reverse (25455145430513), we get a palindrome (56958599585965).

The spelling of 31503454155452 in words is "thirty-one trillion, five hundred three billion, four hundred fifty-four million, one hundred fifty-five thousand, four hundred fifty-two".