1020351 has 4 divisors (see below), whose sum is σ = 1360472. Its totient is φ = 680232.

The previous prime is 1020337. The next prime is 1020353. The reversal of 1020351 is 1530201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1530201 = 3 ⋅510067.

It is not a de Polignac number, because 1020351 - 2⁷ = 1020223 is a prime.

It is a super-2 number, since 2×1020351² = 2082232326402, which contains 22 as substring.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170056 + ... + 170061.

It is an arithmetic number, because the mean of its divisors is an integer number (340118).

2^1020351 is an apocalyptic number.

1020351 is a deficient number, since it is larger than the sum of its proper divisors (340121).

1020351 is an equidigital number, since it uses as much as digits as its factorization.

1020351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340120.

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 1020351 is about 1010.1242497832. The cubic root of 1020351 is about 100.6738161864.

Adding to 1020351 its reverse (1530201), we get a palindrome (2550552).

The spelling of 1020351 in words is "one million, twenty thousand, three hundred fifty-one".