1020331402040 has 32 divisors (see below), whose sum is σ = 2304474749280. Its totient is φ = 406580721792.

The previous prime is 1020331402019. The next prime is 1020331402081. The reversal of 1020331402040 is 402041330201.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48484319 + ... + 48505358.

It is an arithmetic number, because the mean of its divisors is an integer number (72014835915).

Almost surely, 2^{1020331402040} is an apocalyptic number.

1020331402040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020331402040 is an abundant number, since it is smaller than the sum of its proper divisors (1284143347240).

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

1020331402040 is a wasteful number, since it uses less digits than its factorization.

1020331402040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96989951 (or 96989947 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 1020331402040 its reverse (402041330201), we get a palindrome (1422372732241).

The spelling of 1020331402040 in words is "one trillion, twenty billion, three hundred thirty-one million, four hundred two thousand, forty".