1023631545 has 16 divisors (see below), whose sum is σ = 1664661312. Its totient is φ = 536986560.

The previous prime is 1023631541. The next prime is 1023631571. The reversal of 1023631545 is 5451363201.

It is not a de Polignac number, because 1023631545 - 2² = 1023631541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1023631541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 558447 + ... + 560276.

It is an arithmetic number, because the mean of its divisors is an integer number (104041332).

Almost surely, 2^1023631545 is an apocalyptic number.

1023631545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1023631545 is a deficient number, since it is larger than the sum of its proper divisors (641029767).

1023631545 is a wasteful number, since it uses less digits than its factorization.

1023631545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118792.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 1023631545 is about 31994.2423726520. The cubic root of 1023631545 is about 1007.8159336918.

Adding to 1023631545 its reverse (5451363201), we get a palindrome (6474994746).

The spelling of 1023631545 in words is "one billion, twenty-three million, six hundred thirty-one thousand, five hundred forty-five".