1023211131 has 8 divisors (see below), whose sum is σ = 1369207824. Its totient is φ = 679677600.

The previous prime is 1023211117. The next prime is 1023211213. The reversal of 1023211131 is 1311123201.

It is a happy number.

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

It is not a de Polignac number, because 1023211131 - 2⁶ = 1023211067 is a prime.

It is a super-2 number, since 2×1023211131² = 2093922037204598322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1023211131.

It is not an unprimeable number, because it can be changed into a prime (1023213131) 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, 614820 + ... + 616481.

It is an arithmetic number, because the mean of its divisors is an integer number (171150978).

Almost surely, 2^1023211131 is an apocalyptic number.

1023211131 is a deficient number, since it is larger than the sum of its proper divisors (345996693).

1023211131 is a wasteful number, since it uses less digits than its factorization.

1023211131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1231581.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1023211131 is about 31987.6715470195. The cubic root of 1023211131 is about 1007.6779419997.

Adding to 1023211131 its reverse (1311123201), we get a palindrome (2334334332).

The spelling of 1023211131 in words is "one billion, twenty-three million, two hundred eleven thousand, one hundred thirty-one".