1031020125 has 16 divisors (see below), whose sum is σ = 1715618112. Its totient is φ = 549877200.

The previous prime is 1031020079. The next prime is 1031020127. The reversal of 1031020125 is 5210201301.

It is not a de Polignac number, because 1031020125 - 2¹⁴ = 1031003741 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031020127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1374319 + ... + 1375068.

It is an arithmetic number, because the mean of its divisors is an integer number (107226132).

Almost surely, 2^1031020125 is an apocalyptic number.

1031020125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1031020125 is a deficient number, since it is larger than the sum of its proper divisors (684597987).

1031020125 is an equidigital number, since it uses as much as digits as its factorization.

1031020125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2749405 (or 2749395 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 1031020125 is about 32109.5020982886. The cubic root of 1031020125 is about 1010.2349304821.

Adding to 1031020125 its reverse (5210201301), we get a palindrome (6241221426).

The spelling of 1031020125 in words is "one billion, thirty-one million, twenty thousand, one hundred twenty-five".