1020431353501 has 32 divisors (see below), whose sum is σ = 1226908569600. Its totient is φ = 829766488320.

The previous prime is 1020431353499. The next prime is 1020431353507. The reversal of 1020431353501 is 1053531340201.

It is a happy number.

It is not a de Polignac number, because 1020431353501 - 2¹ = 1020431353499 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1020431353501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020431353507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22557816 + ... + 22603006.

It is an arithmetic number, because the mean of its divisors is an integer number (38340892800).

Almost surely, 2^{1020431353501} is an apocalyptic number.

It is an amenable number.

1020431353501 is a deficient number, since it is larger than the sum of its proper divisors (206477216099).

1020431353501 is a wasteful number, since it uses less digits than its factorization.

1020431353501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46369.

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 1020431353501 its reverse (1053531340201), we get a palindrome (2073962693702).

The spelling of 1020431353501 in words is "one trillion, twenty billion, four hundred thirty-one million, three hundred fifty-three thousand, five hundred one".