31953540503 has 2 divisors, whose sum is σ = 31953540504. Its totient is φ = 31953540502.

The previous prime is 31953540497. The next prime is 31953540559. The reversal of 31953540503 is 30504535913.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31953540503 is a prime.

It is a super-2 number, since 2×31953540503² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31953540403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15976770251 + 15976770252.

It is an arithmetic number, because the mean of its divisors is an integer number (15976770252).

Almost surely, 2^31953540503 is an apocalyptic number.

31953540503 is a deficient number, since it is larger than the sum of its proper divisors (1).

31953540503 is an equidigital number, since it uses as much as digits as its factorization.

31953540503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 121500, while the sum is 38.

The spelling of 31953540503 in words is "thirty-one billion, nine hundred fifty-three million, five hundred forty thousand, five hundred three".