1020213031331 has 8 divisors (see below), whose sum is σ = 1105192089120. Its totient is φ = 941735103816.

The previous prime is 1020213031303. The next prime is 1020213031363. The reversal of 1020213031331 is 1331303120201.

It is a de Polignac number, because none of the positive numbers 2^k-1020213031331 is a prime.

It is a super-2 number, since 2×1020213031331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020213031381) 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 7 ways as a sum of consecutive naturals, for example, 232181015 + ... + 232185408.

It is an arithmetic number, because the mean of its divisors is an integer number (138149011140).

Almost surely, 2^{1020213031331} is an apocalyptic number.

1020213031331 is a deficient number, since it is larger than the sum of its proper divisors (84979057789).

1020213031331 is an frugal number, since it uses more digits than its factorization.

1020213031331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464366462 (or 464366436 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 1020213031331 its reverse (1331303120201), we get a palindrome (2351516151532).

The spelling of 1020213031331 in words is "one trillion, twenty billion, two hundred thirteen million, thirty-one thousand, three hundred thirty-one".