1023212631 has 8 divisors (see below), whose sum is σ = 1559181184. Its totient is φ = 584692920.

The previous prime is 1023212623. The next prime is 1023212653. The reversal of 1023212631 is 1362123201.

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

It is not a de Polignac number, because 1023212631 - 2³ = 1023212623 is a prime.

It is a super-2 number, since 2×1023212631² = 2093928176475884322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 48724411 = 1023212631 / (1 + 0 + 2 + 3 + 2 + 1 + 2 + 6 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1023212598 and 1023212607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023212621) 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, 24362185 + ... + 24362226.

It is an arithmetic number, because the mean of its divisors is an integer number (194897648).

Almost surely, 2^1023212631 is an apocalyptic number.

1023212631 is a deficient number, since it is larger than the sum of its proper divisors (535968553).

1023212631 is an equidigital number, since it uses as much as digits as its factorization.

1023212631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48724421.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1023212631 is about 31987.6949935440. The cubic root of 1023212631 is about 1007.6784344091.

Adding to 1023212631 its reverse (1362123201), we get a palindrome (2385335832).

The spelling of 1023212631 in words is "one billion, twenty-three million, two hundred twelve thousand, six hundred thirty-one".