1201321310 has 16 divisors (see below), whose sum is σ = 2471289696. Its totient is φ = 411881568.

The previous prime is 1201321273. The next prime is 1201321327. The reversal of 1201321310 is 131231021.

It is a super-2 number, since 2×1201321310² = 2886345779720232200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a Curzon number.

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, 8580797 + ... + 8580936.

It is an arithmetic number, because the mean of its divisors is an integer number (154455606).

Almost surely, 2^1201321310 is an apocalyptic number.

1201321310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1201321310 is an abundant number, since it is smaller than the sum of its proper divisors (1269968386).

1201321310 is a wasteful number, since it uses less digits than its factorization.

1201321310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17161747.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1201321310 is about 34660.0823715120. The cubic root of 1201321310 is about 1063.0484542829.

Adding to 1201321310 its reverse (131231021), we get a palindrome (1332552331).

The spelling of 1201321310 in words is "one billion, two hundred one million, three hundred twenty-one thousand, three hundred ten".