1031252020 has 24 divisors (see below), whose sum is σ = 2195298504. Its totient is φ = 406849536.

The previous prime is 1031251993. The next prime is 1031252039. The reversal of 1031252020 is 202521301.

It can be written as a sum of positive squares in 4 ways, for example, as 159112996 + 872139024 = 12614^2 + 29532^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1031251985 and 1031252003.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 351709 + ... + 354628.

It is an arithmetic number, because the mean of its divisors is an integer number (91470771).

Almost surely, 2^1031252020 is an apocalyptic number.

1031252020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1031252020 is an abundant number, since it is smaller than the sum of its proper divisors (1164046484).

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

1031252020 is a wasteful number, since it uses less digits than its factorization.

1031252020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706419 (or 706417 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1031252020 is about 32113.1128980048. The cubic root of 1031252020 is about 1010.3106648161.

Adding to 1031252020 its reverse (202521301), we get a palindrome (1233773321).

The spelling of 1031252020 in words is "one billion, thirty-one million, two hundred fifty-two thousand, twenty".