1213210031 has 8 divisors (see below), whose sum is σ = 1340256000. Its totient is φ = 1088956440.

The previous prime is 1213210007. The next prime is 1213210039. The reversal of 1213210031 is 1300123121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1213210031 - 2¹⁰ = 1213209007 is a prime.

It is a super-2 number, since 2×1213210031² = 2943757158638041922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1213209988 and 1213210015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213210039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 697181 + ... + 698918.

It is an arithmetic number, because the mean of its divisors is an integer number (167532000).

Almost surely, 2^1213210031 is an apocalyptic number.

1213210031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1213210031 is a deficient number, since it is larger than the sum of its proper divisors (127045969).

1213210031 is a wasteful number, since it uses less digits than its factorization.

1213210031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1396189.

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

The square root of 1213210031 is about 34831.1646517885. The cubic root of 1213210031 is about 1066.5437232108.

Adding to 1213210031 its reverse (1300123121), we get a palindrome (2513333152).

The spelling of 1213210031 in words is "one billion, two hundred thirteen million, two hundred ten thousand, thirty-one".